diff --git a/src/gen/lib/attribute.py b/src/gen/lib/attribute.py
index 723d342c3..306287788 100644
--- a/src/gen/lib/attribute.py
+++ b/src/gen/lib/attribute.py
@@ -67,7 +67,7 @@ class Attribute(SecondaryObject, PrivacyBase, SourceBase, NoteBase):
         NoteBase.__init__(self, source)
         
         if source:
-            self.type = source.type
+            self.type = AttributeType(source.type)
             self.value = source.value
         else:
             self.type = AttributeType()
diff --git a/src/gen/lib/childref.py b/src/gen/lib/childref.py
index d2a8688a2..372dc6254 100644
--- a/src/gen/lib/childref.py
+++ b/src/gen/lib/childref.py
@@ -57,8 +57,8 @@ class ChildRef(SecondaryObject, PrivacyBase, SourceBase, NoteBase, RefBase):
         NoteBase.__init__(self, source)
         RefBase.__init__(self, source)
         if source:
-            self.frel = source.frel
-            self.mrel = source.mrel
+            self.frel = ChildRefType(source.frel)
+            self.mrel = ChildRefType(source.mrel)
         else:
             self.frel = ChildRefType()
             self.mrel = ChildRefType()
diff --git a/src/gen/lib/event.py b/src/gen/lib/event.py
index 8a650582d..db09164df 100644
--- a/src/gen/lib/event.py
+++ b/src/gen/lib/event.py
@@ -76,7 +76,7 @@ class Event(SourceBase, NoteBase, MediaBase, AttributeBase,
         
         if source:
             self.__description = source.__description
-            self.__type = source.__type
+            self.__type = EventType(source.__type)
         else:
             self.__description = ""
             self.__type = EventType()
diff --git a/src/gen/lib/eventref.py b/src/gen/lib/eventref.py
index e3dec30c8..2e8dc7daf 100644
--- a/src/gen/lib/eventref.py
+++ b/src/gen/lib/eventref.py
@@ -60,7 +60,7 @@ class EventRef(SecondaryObject, PrivacyBase, NoteBase, AttributeBase, RefBase):
         AttributeBase.__init__(self, source)
         RefBase.__init__(self, source)
         if source:
-            self.__role = source.__role
+            self.__role = EventRoleType(source.__role)
         else:
             self.__role = EventRoleType()
 
diff --git a/src/gen/lib/genderstats.py b/src/gen/lib/genderstats.py
index 573699c6d..150dac3cf 100644
--- a/src/gen/lib/genderstats.py
+++ b/src/gen/lib/genderstats.py
@@ -47,6 +47,7 @@ class GenderStats(object):
         if stats is None:
             self.stats = {}
         else:
+            # Current use of GenderStats is such that a shallow copy suffices.
             self.stats = stats
 
     def save_stats(self):
diff --git a/src/gen/lib/name.py b/src/gen/lib/name.py
index bfa1884c0..81620e476 100644
--- a/src/gen/lib/name.py
+++ b/src/gen/lib/name.py
@@ -90,7 +90,7 @@ class Name(SecondaryObject, PrivacyBase, SurnameBase, SourceBase, NoteBase,
             self.first_name = source.first_name
             self.suffix = source.suffix
             self.title = source.title
-            self.type = source.type
+            self.type = NameType(source.type)
             self.group_as = source.group_as
             self.sort_as = source.sort_as
             self.display_as = source.display_as
diff --git a/src/gen/lib/reporef.py b/src/gen/lib/reporef.py
index 0d8f3066a..dcfa7243c 100644
--- a/src/gen/lib/reporef.py
+++ b/src/gen/lib/reporef.py
@@ -53,7 +53,7 @@ class RepoRef(SecondaryObject, PrivacyBase, NoteBase, RefBase):
         RefBase.__init__(self, source)
         if source:
             self.call_number = source.call_number
-            self.media_type = source.media_type
+            self.media_type = SourceMediaType(source.media_type)
         else:
             self.call_number = ""
             self.media_type = SourceMediaType()
diff --git a/src/gen/lib/styledtexttag.py b/src/gen/lib/styledtexttag.py
index cda08301e..f97f24691 100644
--- a/src/gen/lib/styledtexttag.py
+++ b/src/gen/lib/styledtexttag.py
@@ -61,6 +61,7 @@ class StyledTextTag(object):
         if ranges is None:
             self.ranges = []
         else:
+            # Current use of StyledTextTag is such that a shallow copy suffices.
             self.ranges = ranges
 
     def serialize(self):
diff --git a/src/gen/lib/surname.py b/src/gen/lib/surname.py
index 8b7232a92..19b2c7a13 100644
--- a/src/gen/lib/surname.py
+++ b/src/gen/lib/surname.py
@@ -53,7 +53,7 @@ class Surname(SecondaryObject):
             self.surname = source.surname
             self.prefix = source.prefix
             self.primary = source.primary
-            self.origintype = source.origintype
+            self.origintype = NameOriginType(source.origintype)
             self.connector = source.connector
         else:
             self.surname = ""
diff --git a/src/gen/lib/tagbase.py b/src/gen/lib/tagbase.py
index 7c759fec6..8e1ce4864 100644
--- a/src/gen/lib/tagbase.py
+++ b/src/gen/lib/tagbase.py
@@ -44,7 +44,7 @@ class TagBase(object):
         :type source: TagBase
         """
         if source:
-            self.tag_list = source.tag_list
+            self.tag_list = list(source.tag_list)
         else:
             self.tag_list = []
 
diff --git a/src/gen/lib/url.py b/src/gen/lib/url.py
index 6714acfcb..08e335536 100644
--- a/src/gen/lib/url.py
+++ b/src/gen/lib/url.py
@@ -60,7 +60,7 @@ class Url(SecondaryObject, PrivacyBase):
         if source:
             self.path = source.path
             self.desc = source.desc
-            self.type = source.type
+            self.type = UrlType(source.type)
         else:
             self.path = ""
             self.desc = ""