Jean I d'Avesnes (1218-1257) was born 1 May 1218 in Houffalize, Belgium to Bouchard IV d'Avesnes (1182-1244) and Margaret II, Countess of Flanders (1202-1280) and died 24 December 1257 Valenciennes, France of unspecified causes. He married Aleid van Holland (bef1234-1284) 1246 JL . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.


Offspring of Jean I d'Avesnes and Aleid van Holland (bef1234-1284)
Name Birth Death Joined with
John II, Count of Hainaut (1247-1304) 1247 22 August 1304 Philippa of Luxembourg (1252-1311)
Boudewijn van Avesnes (aft1247-aft1299)
Johanna van Avesnes (?-1304)
Bouchard van Avesnes (1251-1296)
Guy d'Avesnes (c1253-1317) 1253 23 May 1317 Utrecht, Netherlands
Willem van Avesnes (1254-1296)
Floris van Avesnes (1255-1297)

Footnotes (including sources)

‡ General