diff --git a/gramps/gen/db/generic.py b/gramps/gen/db/generic.py
index 916c7ae19..bd2ffe634 100644
--- a/gramps/gen/db/generic.py
+++ b/gramps/gen/db/generic.py
@@ -1922,9 +1922,8 @@ class DbGeneric(DbWriteBase, DbReadBase, UpdateCallback, Callback):
     def iter_sources(self, order_by=None):
         return self.iter_items(order_by, Source)
 
-    def iter_tags(self):
-        return (Tag.create(data[1]) for data in self.get_tag_cursor())
-
+    def iter_tags(self, order_by=None):
+        return self.iter_items(order_by, Tag)
 
     def set_prefixes(self, person, media, family, source, citation,
                      place, event, repository, note):
diff --git a/gramps/gen/plug/report/utils.py b/gramps/gen/plug/report/utils.py
index 39507aeb2..3a14a4668 100644
--- a/gramps/gen/plug/report/utils.py
+++ b/gramps/gen/plug/report/utils.py
@@ -161,10 +161,12 @@ def insert_image(database, doc, photo, user,
 #
 #-------------------------------------------------------------------------
 def find_spouse(person, family):
-    if person.get_handle() == family.get_father_handle():
-        spouse_handle = family.get_mother_handle()
-    else:
-        spouse_handle = family.get_father_handle()
+    spouse_handle = None
+    if family:
+        if person.get_handle() == family.get_father_handle():
+            spouse_handle = family.get_mother_handle()
+        else:
+            spouse_handle = family.get_father_handle()
     return spouse_handle
 
 #-------------------------------------------------------------------------
diff --git a/gramps/gen/utils/db.py b/gramps/gen/utils/db.py
index 217e4ded6..ce8410d77 100644
--- a/gramps/gen/utils/db.py
+++ b/gramps/gen/utils/db.py
@@ -393,8 +393,9 @@ def find_children(db,p):
     childlist = []
     for family_handle in p.get_family_handle_list():
         family = db.get_family_from_handle(family_handle)
-        for child_ref in family.get_child_ref_list():
-            childlist.append(child_ref.ref)
+        if family:
+            for child_ref in family.get_child_ref_list():
+                childlist.append(child_ref.ref)
     return childlist
 
 #-------------------------------------------------------------------------
diff --git a/gramps/gui/editors/displaytabs/personeventembedlist.py b/gramps/gui/editors/displaytabs/personeventembedlist.py
index af8a15c2e..69c9b3a20 100644
--- a/gramps/gui/editors/displaytabs/personeventembedlist.py
+++ b/gramps/gui/editors/displaytabs/personeventembedlist.py
@@ -75,6 +75,8 @@ class PersonEventEmbedList(EventEmbedList):
             if family_handle_list:
                 for family_handle in family_handle_list:
                     family = self.dbstate.db.get_family_from_handle(family_handle)
+                    if family is None:
+                        continue
                     father_handle = family.get_father_handle()
                     mother_handle = family.get_mother_handle()
                     if self.obj.get_handle()  == father_handle:
diff --git a/gramps/plugins/gramplet/citations.py b/gramps/plugins/gramplet/citations.py
index 3e20bc041..2ea5b3512 100644
--- a/gramps/plugins/gramplet/citations.py
+++ b/gramps/plugins/gramplet/citations.py
@@ -187,12 +187,13 @@ class Citations(Gramplet, DbGUIElement):
         return False
 
     def check_eventref_citations(self, obj):
-        for event_ref in obj.get_event_ref_list():
-            if self.check_attribute_citations(event_ref):
-                return True
-            event = self.dbstate.db.get_event_from_handle(event_ref.ref)
-            if self.check_event_citations(event):
-                return True
+        if obj:
+            for event_ref in obj.get_event_ref_list():
+                if self.check_attribute_citations(event_ref):
+                    return True
+                event = self.dbstate.db.get_event_from_handle(event_ref.ref)
+                if self.check_event_citations(event):
+                    return True
         return False
 
     def check_event_citations(self, event):
diff --git a/gramps/plugins/gramplet/events.py b/gramps/plugins/gramplet/events.py
index de24e90fa..4a9ec8ce0 100644
--- a/gramps/plugins/gramplet/events.py
+++ b/gramps/plugins/gramplet/events.py
@@ -212,9 +212,9 @@ class PersonEvents(Events):
             spouse = self.dbstate.db.get_person_from_handle(spouse_handle)
         else:
             spouse = None
-
-        for event_ref in family.get_event_ref_list():
-            self.add_event_ref(event_ref, spouse)
+        if family:
+            for event_ref in family.get_event_ref_list():
+                self.add_event_ref(event_ref, spouse)
 
     def get_start_date(self):
         """