diff --git a/helper/diffPlaces.js b/helper/diffPlaces.js
index 0094f212b..33a8093d6 100644
--- a/helper/diffPlaces.js
+++ b/helper/diffPlaces.js
@@ -124,17 +124,37 @@ function isNameDifferent(item1, item2, requestLanguage){
   // iterate over all the languages in item2, comparing them to the
   // 'default' name of item1 and also against the language requested by the user.
   for( let lang in names2 ){
+    if (!names2.hasOwnProperty(lang)) { continue; } // do not iterate over inherited properties
     if( !isPropertyDifferent({[lang]: names1.default}, names2, lang) ){ return false; }
     if( requestLanguage && !isPropertyDifferent({[lang]: names1[requestLanguage]}, names2, lang) ){ return false; }
   }
 
-  // iterate over all the languages in item1, comparing them to the
-  // 'default' name of item2 and also against the language requested by the user.
+  // as above, but inverse
   for( let lang in names1 ){
+    if (!names1.hasOwnProperty(lang)) { continue; } // do not iterate over inherited properties
     if( !isPropertyDifferent({[lang]: names2.default}, names1, lang) ){ return false; }
     if( requestLanguage && !isPropertyDifferent({[lang]: names2[requestLanguage]}, names1, lang) ){ return false; }
   }
 
+  // iterate over the parent field values from the same layer as item2 itself and compare them to
+  // the 'default' name of item1 and also against the language requested by the user.
+  // note: this is helpful when the item 'source' is different from the parent 'source'
+  // at the same level in the hierarchy and the labels assigned differ.
+  let layer2 = _.get(item2, 'layer');
+  let parent2 = _.get(item2, 'parent');
+  for (let name of _.castArray(_.get(parent2, layer2, []))) {
+    if (!isPropertyDifferent({ default: name }, names1, 'default')) { return false; }
+    if (requestLanguage && !isPropertyDifferent({ [requestLanguage]: name }, names1, requestLanguage)) { return false; }
+  }
+
+  // as above, but inverse
+  let layer1 = _.get(item1, 'layer');
+  let parent1 = _.get(item1, 'parent');
+  for (let name of _.castArray(_.get(parent1, layer1, []))) {
+    if (!isPropertyDifferent({ default: name }, names2, 'default')) { return false; }
+    if (requestLanguage && !isPropertyDifferent({ [requestLanguage]: name }, names2, requestLanguage)) { return false; }
+  }
+
   return true;
 }
 
diff --git a/test/unit/fixture/berlin_response.json b/test/unit/fixture/berlin_response.json
new file mode 100644
index 000000000..164d5c776
--- /dev/null
+++ b/test/unit/fixture/berlin_response.json
@@ -0,0 +1,2104 @@
+[
+  {
+    "center_point": {
+      "lon": 13.41377,
+      "lat": 52.5233
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "region": [
+        "Berlin"
+      ],
+      "region_id": [
+        "85682499"
+      ],
+      "region_a": [
+        "BE"
+      ],
+      "region_source": [
+        null
+      ],
+      "borough": [
+        "Mitte"
+      ],
+      "borough_id": [
+        "1108815545"
+      ],
+      "borough_a": [
+        null
+      ],
+      "borough_source": [
+        null
+      ],
+      "locality": [
+        "Berlin"
+      ],
+      "locality_id": [
+        "101909779"
+      ],
+      "locality_a": [
+        null
+      ],
+      "locality_source": [
+        null
+      ],
+      "localadmin": [
+        "Berlin"
+      ],
+      "localadmin_id": [
+        "1377694153"
+      ],
+      "localadmin_a": [
+        null
+      ],
+      "localadmin_source": [
+        null
+      ],
+      "neighbourhood": [
+        "Mitte"
+      ],
+      "neighbourhood_id": [
+        "420784293"
+      ],
+      "neighbourhood_a": [
+        null
+      ],
+      "neighbourhood_source": [
+        null
+      ]
+    },
+    "name": {
+      "default": "Berlin"
+    },
+    "addendum": {
+      "geonames": "{\"feature_code\":\"ADM4\"}"
+    },
+    "source": "geonames",
+    "source_id": "6547539",
+    "category": [
+      "admin"
+    ],
+    "layer": "neighbourhood",
+    "population": 3669491,
+    "_id": "geonames:neighbourhood:6547539",
+    "_score": 20.994846
+  },
+  {
+    "center_point": {
+      "lon": 13.41377,
+      "lat": 52.5233
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "region": [
+        "Berlin"
+      ],
+      "region_id": [
+        "85682499"
+      ],
+      "region_a": [
+        "BE"
+      ],
+      "region_source": [
+        null
+      ],
+      "locality": [
+        "Berlin",
+        "Stadt"
+      ],
+      "locality_id": [
+        "6547383"
+      ],
+      "locality_a": [
+        null
+      ],
+      "locality_source": [
+        null
+      ],
+      "localadmin": [
+        "Berlin"
+      ],
+      "localadmin_id": [
+        "1377694153"
+      ],
+      "localadmin_a": [
+        null
+      ],
+      "localadmin_source": [
+        null
+      ]
+    },
+    "name": {
+      "default": [
+        "Berlin",
+        "Stadt"
+      ]
+    },
+    "addendum": {
+      "geonames": "{\"feature_code\":\"ADM3\"}"
+    },
+    "source": "geonames",
+    "source_id": "6547383",
+    "category": [
+      "admin"
+    ],
+    "layer": "locality",
+    "population": 3669491,
+    "_id": "geonames:locality:6547383",
+    "_score": 20.994846
+  },
+  {
+    "center_point": {
+      "lon": 13.41667,
+      "lat": 52.5
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "region": [
+        "Berlin"
+      ],
+      "region_id": [
+        "85682499"
+      ],
+      "region_a": [
+        "BE"
+      ],
+      "region_source": [
+        null
+      ]
+    },
+    "name": {
+      "default": "Land Berlin"
+    },
+    "addendum": {
+      "geonames": "{\"feature_code\":\"ADM1\"}"
+    },
+    "source": "geonames",
+    "source_id": "2950157",
+    "category": [
+      "admin:admin1",
+      "admin"
+    ],
+    "layer": "region",
+    "population": 3442675,
+    "_id": "geonames:region:2950157",
+    "_score": 20.911718
+  },
+  {
+    "center_point": {
+      "lon": 13.41053,
+      "lat": 52.52437
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "region": [
+        "Berlin"
+      ],
+      "region_id": [
+        "85682499"
+      ],
+      "region_a": [
+        "BE"
+      ],
+      "region_source": [
+        null
+      ],
+      "locality": [
+        "Berlin"
+      ],
+      "locality_id": [
+        "2950159"
+      ],
+      "locality_a": [
+        null
+      ],
+      "locality_source": [
+        null
+      ],
+      "localadmin": [
+        "Berlin"
+      ],
+      "localadmin_id": [
+        "1377694153"
+      ],
+      "localadmin_a": [
+        null
+      ],
+      "localadmin_source": [
+        null
+      ]
+    },
+    "name": {
+      "default": "Berlin"
+    },
+    "addendum": {
+      "geonames": "{\"feature_code\":\"PPLC\"}"
+    },
+    "source": "geonames",
+    "source_id": "2950159",
+    "category": [
+      "admin:city:capital",
+      "admin:city",
+      "admin"
+    ],
+    "layer": "locality",
+    "population": 3426354,
+    "_id": "geonames:locality:2950159",
+    "_score": 20.905527
+  },
+  {
+    "center_point": {
+      "lon": 13.407032,
+      "lat": 52.524932
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "localadmin": [
+        "Berlin"
+      ],
+      "localadmin_id": [
+        "1377694153"
+      ],
+      "localadmin_a": [
+        null
+      ],
+      "localadmin_source": [
+        null
+      ],
+      "locality": [
+        "Berlin"
+      ],
+      "locality_id": [
+        "101909779"
+      ],
+      "locality_a": [
+        null
+      ],
+      "locality_source": [
+        null
+      ],
+      "region": [
+        "Berlin"
+      ],
+      "region_id": [
+        "85682499"
+      ],
+      "region_a": [
+        "BE"
+      ],
+      "region_source": [
+        null
+      ]
+    },
+    "bounding_box": "{\"min_lat\":52.338242,\"max_lat\":52.674917,\"min_lon\":13.088333,\"max_lon\":13.760469}",
+    "name": {
+      "default": "Berlin",
+      "ab": "Берлин",
+      "af": "Berlyn",
+      "am": "በርሊን",
+      "ar": "برلين",
+      "an": "Berlín",
+      "av": "Берлин",
+      "ba": "Берлин",
+      "be": "Берлін",
+      "bn": "বার্লিন",
+      "bo": "པེར་ལིན །",
+      "bg": "Берлин",
+      "ca": [
+        "Berlín",
+        "Estat de Berlín"
+      ],
+      "cs": "Berlín",
+      "ce": "Берлин",
+      "cu": "Бєрлинъ",
+      "cv": "Берлин",
+      "co": "Berlinu",
+      "el": "Βερολίνο",
+      "eo": "Berlino",
+      "et": "Berliin",
+      "fa": "برلین",
+      "fi": "Berliini",
+      "fy": "Berlyn",
+      "ga": "Beirlín",
+      "gl": "Berlín",
+      "gv": "Berleen",
+      "gu": "બર્લિન",
+      "ht": "Bèlen",
+      "he": "ברלין",
+      "hi": "बर्लिन",
+      "hy": [
+        "Բերլին",
+        "Բեռլին"
+      ],
+      "iu": "ᐱᕐᓖᓐ",
+      "is": "Berlín",
+      "it": "Berlino",
+      "ja": "ベルリン",
+      "kn": "ಬರ್ಲಿನ್",
+      "ka": "ბერლინი",
+      "kk": "Берлин",
+      "km": "ប៊ែរឡាំង",
+      "ky": "Берлин",
+      "kv": "Берлин",
+      "ko": "베를린",
+      "ku": "Berlîn",
+      "la": "Berolinum",
+      "lv": "Berlīne",
+      "li": "Berlien",
+      "lt": "Berlynas",
+      "ml": "ബെർലിൻ",
+      "mr": "बर्लिन",
+      "mk": "Берлин",
+      "mn": "Берлин",
+      "mi": "Pearīni",
+      "my": "ဘာလင်မြို့",
+      "ne": "बर्लिन",
+      "nl": "Berlijn",
+      "or": "ବର୍ଲିନ",
+      "om": "Barliin",
+      "os": "Берлин",
+      "pa": "ਬਰਲਿਨ",
+      "pt": "Berlim",
+      "ps": "برلين",
+      "qu": "Berlín",
+      "ru": "Берлин",
+      "sa": "बर्लिन",
+      "si": "බර්ලිනය",
+      "sk": "Berlín",
+      "sm": "Perelini",
+      "sd": [
+        "برلن، جرمني",
+        "برلن"
+      ],
+      "so": "Baarliin",
+      "es": "Berlín",
+      "sq": "Berlini",
+      "sc": "Berlino",
+      "sr": "Берлин",
+      "su": "Bérlin",
+      "ta": "பெர்லின்",
+      "tt": "Берлин",
+      "te": "బెర్లిన్",
+      "tg": "Берлин",
+      "th": "เบอร์ลิน",
+      "ti": "በረሊን",
+      "ug": "Bérlin",
+      "uk": "Берлін",
+      "ur": "برلن",
+      "xh": "I-Berlin",
+      "yi": "בערלין",
+      "zh": "柏林",
+      "zu": "IBerlini"
+    },
+    "source": "whosonfirst",
+    "source_id": "101909779",
+    "layer": "locality",
+    "population": 3375222,
+    "_id": "whosonfirst:locality:101909779",
+    "_score": 20.885937
+  },
+  {
+    "center_point": {
+      "lon": 13.407028,
+      "lat": 52.524932
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "region": [
+        "Berlin"
+      ],
+      "region_id": [
+        "85682499"
+      ],
+      "region_a": [
+        "BE"
+      ],
+      "region_source": [
+        null
+      ]
+    },
+    "bounding_box": "{\"min_lat\":52.338242,\"max_lat\":52.674917,\"min_lon\":13.088333,\"max_lon\":13.760469}",
+    "name": {
+      "default": [
+        "Berlin",
+        "Berlin State"
+      ],
+      "ab": "Берлин",
+      "af": "Berlyn",
+      "am": "በርሊን",
+      "ar": "برلين",
+      "an": "Berlín",
+      "av": "Берлин",
+      "ba": "Берлин",
+      "be": [
+        "Горад Берлін",
+        "Берлін"
+      ],
+      "bn": "বার্লিন",
+      "bo": [
+        "པེར་ལིན​།",
+        "པེར་ལིན །"
+      ],
+      "bg": "Берлин",
+      "ca": "Berlín",
+      "cs": "Berlín",
+      "ce": "Берлин",
+      "cu": "Бєрлинъ",
+      "cv": "Берлин",
+      "co": "Berlinu",
+      "el": "Βερολίνο",
+      "eo": "Berlino",
+      "et": "Berliin",
+      "fa": "برلین",
+      "fi": "Berliini",
+      "fy": "Berlyn",
+      "ga": "Beirlín",
+      "gl": "Berlín",
+      "gv": "Berleen",
+      "gu": "બર્લિન",
+      "ht": "Bèlen",
+      "he": "ברלין",
+      "hi": "बर्लिन",
+      "hy": "Բեռլին",
+      "iu": "ᐱᕐᓖᓐ",
+      "is": "Berlín",
+      "it": "Berlino",
+      "ja": "ベルリン",
+      "kn": "ಬರ್ಲಿನ್",
+      "ks": "बर्लिन",
+      "ka": "ბერლინი",
+      "kk": "Берлин",
+      "ky": "Берлин",
+      "kv": "Берлин",
+      "ko": "베를린",
+      "ku": "Berlîn",
+      "la": "Berolinum",
+      "lv": "Berlīne",
+      "li": "Berlien",
+      "lt": "Berlynas",
+      "ml": "ബെർലിൻ",
+      "mr": "बर्लिन",
+      "mk": "Берлин",
+      "mn": "Берлин",
+      "mi": "Pearīni",
+      "my": "ဘာလင်မြို့",
+      "ne": "बर्लिन",
+      "nl": "Berlijn",
+      "or": "ବର୍ଲିନ",
+      "om": "Barliin",
+      "os": "Берлин",
+      "pa": "ਬਰਲਿਨ",
+      "pt": "Berlim",
+      "ps": "برلين",
+      "ru": "Берлин",
+      "sa": "बर्लिन",
+      "si": "බර්ලිනය",
+      "sk": "Berlín",
+      "sm": "Perelini",
+      "sd": "برلن",
+      "so": "Baarliin",
+      "es": "Berlín",
+      "sq": "Berlini",
+      "sc": "Berlino",
+      "sr": "Берлин",
+      "su": "Bérlin",
+      "ta": "பெர்லின்",
+      "tt": "Берлин",
+      "te": "బెర్లిన్",
+      "tg": "Берлин",
+      "th": "เบอร์ลิน",
+      "ti": "በረሊን",
+      "ug": "Bérlin",
+      "uk": "Берлін",
+      "ur": "برلن",
+      "xh": "I-Berlin",
+      "yi": "בערלין",
+      "zh": "柏林",
+      "zu": "IBerlini"
+    },
+    "source": "whosonfirst",
+    "source_id": "85682499",
+    "layer": "region",
+    "population": 3292365,
+    "_id": "whosonfirst:region:85682499",
+    "_score": 20.853554
+  },
+  {
+    "center_point": {
+      "lon": 13.58228,
+      "lat": 52.44254
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "region": [
+        "Berlin"
+      ],
+      "region_id": [
+        "85682499"
+      ],
+      "region_a": [
+        "BE"
+      ],
+      "region_source": [
+        null
+      ],
+      "borough": [
+        "Treptow-Kopenick"
+      ],
+      "borough_id": [
+        "1108815559"
+      ],
+      "borough_a": [
+        null
+      ],
+      "borough_source": [
+        null
+      ],
+      "locality": [
+        "Berlin"
+      ],
+      "locality_id": [
+        "101909779"
+      ],
+      "locality_a": [
+        null
+      ],
+      "locality_source": [
+        null
+      ],
+      "localadmin": [
+        "Berlin"
+      ],
+      "localadmin_id": [
+        "1377694153"
+      ],
+      "localadmin_a": [
+        null
+      ],
+      "localadmin_source": [
+        null
+      ],
+      "neighbourhood": [
+        "Kopenick"
+      ],
+      "neighbourhood_id": [
+        "420784377"
+      ],
+      "neighbourhood_a": [
+        null
+      ],
+      "neighbourhood_source": [
+        null
+      ]
+    },
+    "name": {
+      "default": "Berlin Köpenick"
+    },
+    "addendum": {
+      "geonames": "{\"feature_code\":\"PPLX\"}"
+    },
+    "source": "geonames",
+    "source_id": "2885657",
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+      "bo": "པེར་ལིན།",
+      "bg": "Берлин",
+      "ca": "Berlín",
+      "cs": "Berlín",
+      "ce": "Берлин",
+      "cu": "Бєрлинъ",
+      "cv": "Берлин",
+      "co": "Berlinu",
+      "el": "Βερολίνο",
+      "eo": "Berlino",
+      "et": "Berliin",
+      "fa": "برلین",
+      "fi": "Berliini",
+      "fy": "Berlyn",
+      "ga": "Beirlín",
+      "gl": "Berlín",
+      "gv": "Berleen",
+      "ht": "Bèlen",
+      "he": "ברלין",
+      "hi": "बर्लिन",
+      "hy": "Բեռլին",
+      "iu": "ᐱᕐᓖᓐ",
+      "is": "Berlín",
+      "it": "Berlino",
+      "ja": "ベルリン",
+      "kn": "ಬರ್ಲಿನ್",
+      "ka": "ბერლინი",
+      "kk": "Берлин",
+      "ky": "Берлин",
+      "kv": "Берлин",
+      "ko": "베를린",
+      "ku": "Berlîn",
+      "la": "Berolinum",
+      "lv": "Berlīne",
+      "li": "Berlien",
+      "lt": "Berlynas",
+      "ml": "ബെർലിൻ",
+      "mr": "बर्लिन",
+      "mk": "Берлин",
+      "mn": "Берлин",
+      "mi": "Pearīni",
+      "my": "ဘာလင်မြို့",
+      "ne": "बर्लिन",
+      "nl": "Berlijn",
+      "or": "ବର୍ଲିନ",
+      "om": "Barliin",
+      "os": "Берлин",
+      "pa": "ਬਰਲਿਨ",
+      "pt": "Berlim",
+      "ps": "برلين",
+      "ru": "Берлин",
+      "sa": "बर्लिन",
+      "si": "බර්ලිනය",
+      "sk": "Berlín",
+      "sm": "Perelini",
+      "sd": "برلن",
+      "so": "Baarliin",
+      "es": "Berlín",
+      "sq": "Berlini",
+      "sc": "Berlino",
+      "sr": "Берлин",
+      "su": "Bérlin",
+      "ta": "பெர்லின்",
+      "tt": "Берлин",
+      "te": "బెర్లిన్",
+      "tg": "Берлин",
+      "th": "เบอร์ลิน",
+      "ti": "በረሊን",
+      "tw": "Bɛɛlin",
+      "ug": "Bérlin",
+      "uk": "Берлін",
+      "ur": "برلن",
+      "xh": "I-Berlin",
+      "yi": "בערלין",
+      "zu": "IBerlini"
+    },
+    "source": "whosonfirst",
+    "source_id": "404495869",
+    "layer": "localadmin",
+    "population": 19866,
+    "_id": "whosonfirst:localadmin:404495869",
+    "_score": 14.195427
+  },
+  {
+    "center_point": {
+      "lon": 13.6833,
+      "lat": 52.5333
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "region": [
+        "Brandenburg"
+      ],
+      "region_id": [
+        "85682553"
+      ],
+      "region_a": [
+        "BB"
+      ],
+      "region_source": [
+        null
+      ],
+      "county": [
+        "Märkisch-Oderland"
+      ],
+      "county_id": [
+        "102063963"
+      ],
+      "county_a": [
+        "MO"
+      ],
+      "county_source": [
+        null
+      ],
+      "locality": [
+        "Neuenhagen bei Berlin"
+      ],
+      "locality_id": [
+        "101756041"
+      ],
+      "locality_a": [
+        null
+      ],
+      "locality_source": [
+        null
+      ],
+      "localadmin": [
+        "Neuenhagen bei Berlin"
+      ],
+      "localadmin_id": [
+        "1377694663"
+      ],
+      "localadmin_a": [
+        null
+      ],
+      "localadmin_source": [
+        null
+      ]
+    },
+    "name": {
+      "default": "Neuenhagen bei Berlin"
+    },
+    "addendum": {
+      "geonames": "{\"feature_code\":\"ADM4\"}"
+    },
+    "source": "geonames",
+    "source_id": "6547610",
+    "category": [
+      "admin"
+    ],
+    "layer": "neighbourhood",
+    "population": 18657,
+    "_id": "geonames:neighbourhood:6547610",
+    "_score": 14.113626
+  },
+  {
+    "center_point": {
+      "lon": 13.704144,
+      "lat": 52.518561
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "county": [
+        "Märkisch-Oderland"
+      ],
+      "county_id": [
+        "102063963"
+      ],
+      "county_a": [
+        null
+      ],
+      "county_source": [
+        null
+      ],
+      "localadmin": [
+        "Neuenhagen bei Berlin"
+      ],
+      "localadmin_id": [
+        "1377694663"
+      ],
+      "localadmin_a": [
+        null
+      ],
+      "localadmin_source": [
+        null
+      ],
+      "locality": [
+        "Neuenhagen bei Berlin"
+      ],
+      "locality_id": [
+        "101756041"
+      ],
+      "locality_a": [
+        null
+      ],
+      "locality_source": [
+        null
+      ],
+      "region": [
+        "Brandenburg"
+      ],
+      "region_id": [
+        "85682553"
+      ],
+      "region_a": [
+        "BB"
+      ],
+      "region_source": [
+        null
+      ]
+    },
+    "bounding_box": "{\"min_lat\":52.499043,\"max_lat\":52.546415,\"min_lon\":13.656866,\"max_lon\":13.742898}",
+    "name": {
+      "default": "Neuenhagen bei Berlin",
+      "fa": "نوینهاگن بای برلین",
+      "hy": "Նոյենհագեն",
+      "ja": "ノイエンハーゲン・バイ・ベルリン",
+      "mk": "Нојенхаген кај Берлин",
+      "ru": "Нойенхаген",
+      "sr": "Нојенхаген беј Берлин",
+      "uk": "Ноєнгаген-бай-Берлін",
+      "zh": "柏林附近新恩哈根"
+    },
+    "source": "whosonfirst",
+    "source_id": "101756041",
+    "layer": "locality",
+    "population": 17007,
+    "_id": "whosonfirst:locality:101756041",
+    "_score": 13.99299
+  },
+  {
+    "center_point": {
+      "lon": 13.7736,
+      "lat": 52.4707
+    },
+    "parent": {
+      "continent": [
+        "Europe"
+      ],
+      "continent_id": [
+        "102191581"
+      ],
+      "continent_a": [
+        null
+      ],
+      "continent_source": [
+        null
+      ],
+      "country": [
+        "Germany"
+      ],
+      "country_id": [
+        "85633111"
+      ],
+      "country_a": [
+        "DEU"
+      ],
+      "country_source": [
+        null
+      ],
+      "region": [
+        "Brandenburg"
+      ],
+      "region_id": [
+        "85682553"
+      ],
+      "region_a": [
+        "BB"
+      ],
+      "region_source": [
+        null
+      ],
+      "county": [
+        "Märkisch-Oderland"
+      ],
+      "county_id": [
+        "102063963"
+      ],
+      "county_a": [
+        "MO"
+      ],
+      "county_source": [
+        null
+      ],
+      "locality": [
+        "Rüdersdorf bei Berlin"
+      ],
+      "locality_id": [
+        "101841449"
+      ],
+      "locality_a": [
+        null
+      ],
+      "locality_source": [
+        null
+      ],
+      "localadmin": [
+        "Rüdersdorf bei Berlin"
+      ],
+      "localadmin_id": [
+        "1377694669"
+      ],
+      "localadmin_a": [
+        null
+      ],
+      "localadmin_source": [
+        null
+      ],
+      "neighbourhood": [
+        "Schönblick"
+      ],
+      "neighbourhood_id": [
+        "85900029"
+      ],
+      "neighbourhood_a": [
+        null
+      ],
+      "neighbourhood_source": [
+        null
+      ]
+    },
+    "name": {
+      "default": "Rüdersdorf bei Berlin"
+    },
+    "addendum": {
+      "geonames": "{\"feature_code\":\"ADM4\"}"
+    },
+    "source": "geonames",
+    "source_id": "6547614",
+    "category": [
+      "admin"
+    ],
+    "layer": "neighbourhood",
+    "population": 15812,
+    "_id": "geonames:neighbourhood:6547614",
+    "_score": 13.898073
+  }
+]
diff --git a/test/unit/helper/diffPlaces.js b/test/unit/helper/diffPlaces.js
index 2304ad469..1f0413228 100644
--- a/test/unit/helper/diffPlaces.js
+++ b/test/unit/helper/diffPlaces.js
@@ -529,6 +529,56 @@ module.exports.tests.isNameDifferent = function (test, common) {
 
     t.end();
   });
+  test('parent hierarchy (same layer) matching', function (t) {
+    t.false(isNameDifferent(
+      { name: { default: 'a' } },
+      { name: { default: 'b' }, layer: 'place', parent: { 'place': 'a' } }
+    ), 'match parent name');
+
+    t.true(isNameDifferent(
+      { name: { default: 'a' } },
+      { name: { default: 'b' }, layer: 'place', parent: { 'foo': 'a' } }
+    ), 'parent name must be from same layer');
+
+    t.false(isNameDifferent(
+      { name: { default: 'c', de: 'a' } },
+      { name: { default: 'b' }, layer: 'place', parent: { 'place': 'a' } },
+      'de'
+    ), 'match parent name (request language)');
+
+    t.true(isNameDifferent(
+      { name: { default: 'c', de: 'a' } },
+      { name: { default: 'b' }, layer: 'place', parent: { 'foo': 'a' } },
+      'de'
+    ), 'parent name must be from same layer (request language)');
+
+    t.end();
+  });
+  test('parent hierarchy (same layer) matching - inverse plus using array syntax', function (t) {
+    t.false(isNameDifferent(
+      { name: { default: ['b'] }, layer: 'place', parent: { 'place': ['a'] } },
+      { name: { default: ['a'] } }
+    ), 'match parent name');
+
+    t.true(isNameDifferent(
+      { name: { default: ['b'] }, layer: 'place', parent: { 'foo': ['a'] } },
+      { name: { default: ['a'] } }
+    ), 'parent name must be from same layer');
+
+    t.false(isNameDifferent(
+      { name: { default: ['b'] }, layer: 'place', parent: { 'place': ['a'] } },
+      { name: { default: ['c'], de: ['a'] } },
+      'de'
+    ), 'match parent name (request language)');
+
+    t.true(isNameDifferent(
+      { name: { default: ['b'] }, layer: 'place', parent: { 'foo': ['a'] } },
+      { name: { default: ['c'], de: ['a'] } },
+      'de'
+    ), 'parent name must be from same layer (request language)');
+
+    t.end();
+  });
   test('real-world tests', function (t) {
     t.false(isNameDifferent(
       { name: { default: 'Malmoe', eng: 'Malmo' } },
diff --git a/test/unit/middleware/dedupe.js b/test/unit/middleware/dedupe.js
index 92fd3443b..2fff40f79 100644
--- a/test/unit/middleware/dedupe.js
+++ b/test/unit/middleware/dedupe.js
@@ -1,3 +1,4 @@
+const _ = require('lodash');
 var data = require('../fixture/dedupe_elasticsearch_results');
 var nonAsciiData = require('../fixture/dedupe_elasticsearch_nonascii_results');
 var customLayerData = require('../fixture/dedupe_elasticsearch_custom_layer_results');
@@ -820,6 +821,37 @@ module.exports.tests.priority = function(test, common) {
       t.end();
     });
   });
+
+  test('real-world test case Berlin', function (t) {
+    const req = {
+      clean: {
+        text: 'Berlin',
+        lang: { iso6393: 'eng' },
+        size: 10
+      }
+    };
+
+    // actual response from real-world autocomplete query for Berlin (contains 20 results)
+    const res = { data: require('../fixture/berlin_response.json') };
+    dedupe(req, res, () => {});
+
+    // first result
+    t.deepEqual(
+      _.pick(res.data[0], ['name.default', 'source', 'source_id', 'layer']),
+      { name: { default: 'Berlin' }, source: 'whosonfirst', source_id: '101909779', layer: 'locality' }
+    );
+
+    // second result
+    t.deepEqual(
+      _.pick(res.data[1], ['name.default', 'source', 'source_id', 'layer']),
+      { name: { default: ['Berlin', 'Stadt'] }, source: 'geonames', source_id: '6547383', layer: 'locality' }
+    );
+
+    // does not contain 'Land Berlin'
+    t.false(res.data.some(f => f.source === 'geonames' && f.source_id === '2950157'));
+
+    t.end();
+  });
 };
 
 module.exports.all = function (tape, common) {