diff --git a/gramps/gen/lib/date.py b/gramps/gen/lib/date.py
index e7e957c81b..8905966792 100644
--- a/gramps/gen/lib/date.py
+++ b/gramps/gen/lib/date.py
@@ -38,6 +38,7 @@
 # Gramps modules
 #
 # ------------------------------------------------------------------------
+from .baseobj import BaseObject
 from ..config import config
 from ..const import GRAMPS_LOCALE as glocale
 from ..errors import DateError
@@ -563,7 +564,7 @@ def _diff(self, date1, date2):
 # Date
 #
 # -------------------------------------------------------------------------
-class Date:
+class Date(BaseObject):
     """
     The core date handling class for Gramps.
 
diff --git a/gramps/gen/lib/styledtext.py b/gramps/gen/lib/styledtext.py
index c64ed76805..1c793115a1 100644
--- a/gramps/gen/lib/styledtext.py
+++ b/gramps/gen/lib/styledtext.py
@@ -35,6 +35,7 @@
 #
 # -------------------------------------------------------------------------
 from ..const import GRAMPS_LOCALE as glocale
+from .baseobj import BaseObject
 from .styledtexttag import StyledTextTag
 
 _ = glocale.translation.gettext
@@ -45,7 +46,7 @@
 # StyledText
 #
 # -------------------------------------------------------------------------
-class StyledText:
+class StyledText(BaseObject):
     """Helper class to enable character based text formatting.
 
     :py:class:`StyledText` is a wrapper class binding the clear text string and
diff --git a/gramps/gen/lib/styledtexttag.py b/gramps/gen/lib/styledtexttag.py
index dfe3c716f4..e1ee33396c 100644
--- a/gramps/gen/lib/styledtexttag.py
+++ b/gramps/gen/lib/styledtexttag.py
@@ -28,6 +28,7 @@
 #
 # -------------------------------------------------------------------------
 from ..const import GRAMPS_LOCALE as glocale
+from .baseobj import BaseObject
 from .styledtexttagtype import StyledTextTagType
 
 _ = glocale.translation.gettext
@@ -38,7 +39,7 @@
 # StyledTextTag
 #
 # -------------------------------------------------------------------------
-class StyledTextTag:
+class StyledTextTag(BaseObject):
     """Hold formatting information for :py:class:`.StyledText`.
 
     :py:class:`StyledTextTag` is a container class, it's attributes are