diff --git a/gramps/plugins/graph/gvfamilylines.py b/gramps/plugins/graph/gvfamilylines.py
index be07c94ad..150deebc7 100644
--- a/gramps/plugins/graph/gvfamilylines.py
+++ b/gramps/plugins/graph/gvfamilylines.py
@@ -867,7 +867,8 @@ class FamilyLinesReport(Report):
                 label += '<TD>'
 
             # at the very least, the label must have the person's name
-            label += name
+            name = name.replace('"', '&#34;')
+            label += name.replace('<', '&#60;').replace('>', '&#62;')
             if self.includeid == 1: # same line
                 label += " (%s)" % p_id
             elif self.includeid == 2: # own line
@@ -1097,4 +1098,6 @@ class FamilyLinesReport(Report):
                     place_text = location.get(PlaceType.STATE)
                 elif location.get(PlaceType.COUNTRY):
                     place_text = location.get(PlaceType.COUNTRY)
+                place_text = place_text.replace('<', '&#60;')
+                place_text = place_text.replace('>', '&#62;')
         return place_text
diff --git a/gramps/plugins/graph/gvhourglass.py b/gramps/plugins/graph/gvhourglass.py
index e5350489d..38547b734 100644
--- a/gramps/plugins/graph/gvhourglass.py
+++ b/gramps/plugins/graph/gvhourglass.py
@@ -211,6 +211,8 @@ class HourGlassReport(Report):
         """
         p_id = person.get_gramps_id()
         name = self._name_display.display(person)
+        name = name.replace('"', '&#34;')
+        name = name.replace('<', '&#60;').replace('>', '&#62;')
 
         birth_evt = get_birth_or_fallback(self.__db, person)
         if birth_evt:
diff --git a/gramps/plugins/graph/gvrelgraph.py b/gramps/plugins/graph/gvrelgraph.py
index 8b030380d..09dafaaa6 100644
--- a/gramps/plugins/graph/gvrelgraph.py
+++ b/gramps/plugins/graph/gvrelgraph.py
@@ -566,11 +566,8 @@ class RelGraphReport(Report):
 
         # at the very least, the label must have the person's name
         p_name = self._name_display.display(person)
-        if self.use_html_output:
-            # avoid < and > in the name, as this is html text
-            label += p_name.replace('<', '&#60;').replace('>', '&#62;')
-        else:
-            label += p_name
+        p_name = p_name.replace('"', '&#34;')
+        label += p_name.replace('<', '&#60;').replace('>', '&#62;')
         p_id = person.get_gramps_id()
         if self.includeid == 1: # same line
             label += " (%s)" % p_id
@@ -719,7 +716,8 @@ class RelGraphReport(Report):
             empty string
         """
         if event and self.event_choice in [2, 3, 5, 6, 7]:
-            return _pd.display_event(self._db, event)
+            place = _pd.display_event(self._db, event)
+            return place.replace('<', '&#60;').replace('>', '&#62;')
         return ''
 
 #------------------------------------------------------------------------