diff --git a/ChangeLog b/ChangeLog
index 65e76a5dc..8dbb39910 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,5 @@
 2004-10-10  Don Allingham  <dallingham@users.sourceforge.net>
+	* src/DateParser.py: try to detect illegal numerical dates
 	* src/GrampsInMemDB.py: handle null handle
 	* src/GrampsXMLDB.py: disable undo during normal read of database
 	* src/ReadGedcom.py: handle lines shorter than 50 lines, disable undo during
@@ -6,6 +7,8 @@
 	* src/ReadXML.py: disable undo during normal read of databas
 	* src/RelLib.py: revert Name.__cmp__ to Name.is_equal
 	* src/docgen/HTMLDoc.py: drop deprecated gnome.ui dialogs
+	* src/Utils.py: not_too_old moved over from RelLib.py
+	* src/WriteGedcom.py: fix call to probably_alive
 	
 2004-10-10 Eero Tamminen <eerot@sf>
 	* TestPlan.txt: Add test for reports like in stable version
diff --git a/src/DateParser.py b/src/DateParser.py
index f87e200b3..177d02b1f 100644
--- a/src/DateParser.py
+++ b/src/DateParser.py
@@ -337,7 +337,10 @@ class DateParser:
             y = self._get_int(groups[0])
             m = self._get_int(groups[1])
             d = self._get_int(groups[2])
-            return (d,m,y,False)
+            if gregorian_valid((d,m)):
+                return (d,m,y,False)
+            else:
+                return Date.EMPTY
 
         match = self._rfc.match(text)
         if match:
@@ -345,7 +348,10 @@ class DateParser:
             d = self._get_int(groups[2])
             m = self._rfc_mons_to_int[groups[3]]
             y = self._get_int(groups[4])
-            return (d,m,y,False)
+            if gregorian_valid((d,m)):
+                return (d,m,y,False)
+            else:
+                return Date.EMPTY
 
         match = self._numeric.match(text)
         if match:
@@ -353,7 +359,10 @@ class DateParser:
             m = self._get_int(groups[1])
             d = self._get_int(groups[3])
             y = self._get_int(groups[4])
-            return (d,m,y,False)
+            if gregorian_valid((d,m)):
+                return (d,m,y,False)
+            else:
+                return Date.EMPTY
 
         return Date.EMPTY
 
@@ -451,3 +460,15 @@ class DateParser:
         new_date = Date.Date()
         self.set_date(new_date,text)
         return new_date
+
+_max_days = [ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ]
+
+def gregorian_valid(date_tuple):
+    day = date_tuple[0]
+    month = date_tuple[1]
+    valid = True
+    if month > 12:
+        valid = False
+    elif day > _max_days[month]:
+        valid = False
+    return valid
diff --git a/src/RelLib.py b/src/RelLib.py
index 60704cc9a..a2219bf80 100644
--- a/src/RelLib.py
+++ b/src/RelLib.py
@@ -2243,8 +2243,3 @@ class GenderStats:
 
         return Person.unknown
 
-def not_too_old(date):
-    time_struct = time.localtime(time.time())
-    current_year = time_struct[0]
-    year = date.get_year()
-    return not( year != 0 and current_year - year > 110)
diff --git a/src/Utils.py b/src/Utils.py
index 0627267e9..cf236605f 100644
--- a/src/Utils.py
+++ b/src/Utils.py
@@ -45,6 +45,7 @@ import gnome
 import const
 import RelImage
 import GrampsMime
+import Date
 
 #-------------------------------------------------------------------------
 #
@@ -664,6 +665,12 @@ def probably_alive(person,db):
                 return False
     return True
 
+def not_too_old(date):
+    time_struct = time.localtime(time.time())
+    current_year = time_struct[0]
+    year = date.get_year()
+    return not( year != 0 and current_year - year > 110)
+
 #-------------------------------------------------------------------------
 #
 # 
diff --git a/src/WriteGedcom.py b/src/WriteGedcom.py
index 34966d181..9983a72a8 100644
--- a/src/WriteGedcom.py
+++ b/src/WriteGedcom.py
@@ -51,6 +51,8 @@ import Date
 import GedcomInfo
 import Errors
 import ansel_utf8
+import Utils
+import Date
 from gettext import gettext as _
 from QuestionDialog import ErrorDialog
 
@@ -750,7 +752,7 @@ class GedcomWriter:
             
     def write_person(self,person):
         self.writeln("0 @%s@ INDI" % person.get_gramps_id())
-        restricted = self.restrict and probably_alive (person,self.db)
+        restricted = self.restrict and Utils.probably_alive (person,self.db)
         self.prefn(person)
         primaryname = person.get_primary_name ()
         if restricted and self.living: