Blanche de Brienne was born circa 1252 to Jean de Brienne (c1230-1296) and Jeanne de Châteaudun (aft1220-1254) and died circa 1302 of unspecified causes. William I of England (1027-1087), Henry II of England (1133-1189), Charlemagne (747-814), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, Rollo of Normandy (860-932)/s.
|Margaret de Fiennes (aft1269-1333)||1269||7 February 1333||Edmund Mortimer, 2nd Baron Mortimer (1251-1304)|
|Robert de Fiennes (c1273-?)|
|John de Fiennes (c1277-1331)|
|Blanche de Brienne (c1252-c1302)||1252||1302||William II de Fiennes (c1245-1302)|
- William Allen Shade 04:53, 20 August 2009 (UTC)