Guillaume of Blois, Count of Chartres, Lord of Sully, was born circa 1086 in Blois to Stephen II, Count of Blois (c1045-1102) and Adela of Normandy (c1062-1138) and died 1150 of unspecified causes. He married Agnes de Sully (c1085-c1102) 1109 JL . William I of England (1027-1087), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, Rollo of Normandy (860-932)/s.
William of Blois, Guillaume De Champagne
|Offspring of Guillaume of Blois and Agnes de Sully (c1085-c1102)|
|Eudes de Sully (-aft1162)||1162||Mathilde de Beaugency (c1115-c1162)|
|Raoul de Sully (-1176)|
|Henry de Sully (-1187)|
|Marguerite de Sully (-1145)|
|Elisabeth de Sully (-1128)|