He had the following children:
M i Herfast de Crepon was born in 975.
Gui de Thours [Parents].Gui married Constance of Brittany.
Constance of Brittany.Constance married Gui de Thours.
They had the following children:
F i Alix de Thouars was born in 1178/1199. She died in 1221.
Thomas de Saint Valery.Thomas married Adelaide de Ponthieu in 1178.
Adelaide de Ponthieu [Parents] died in 1251. She married Thomas de Saint Valery in 1178.
They had the following children:
F i Leonore Saint Valerie was born about 1185. She died in 1250.
Maurice de Berkeley.Maurice married Isabel FitzRoy.
Isabel FitzRoy.Isabel married Maurice de Berkeley.
They had the following children:
M i Thomas de Berkeley was born in 1245. He died on 23 Jul 1321.
Hugh de Vivonne was born in 1195. He married Mabel Malet about 1222 in Malet, Somersetshire, England.
Mabel Malet [Parents] was born about 1195 in Malet, Somersetshire, England. She died in 1227/1293. She married Hugh de Vivonne about 1222 in Malet, Somersetshire, England.
They had the following children:
M i William le Forte de Vivonia was born in 1219. He died in 1256/1310. M ii John de Vivonia. M iii Hugh de Vivonia. F iv Helewyse de Vivonia.
John de Grey [Parents] was born in 1268 in Wilton, England. He died on 28 Oct 1323 in Groby, Leicestershire, England. He married Anne De Ferrers.
Anne De Ferrers [Parents] was born in 1264 in Groby, Leicestershire, England. She died in 1324. She married John de Grey. Anne was born in 1264.
They had the following children:
F i Joan de Grey was born in 1283. M ii Henry De Grey was born on 28 Oct 1281. He died on 10 Dec 1342.
Jean de Brienne [Parents] was born in 1190/1231. He died in 1296. He married Jeanne Du Loir in 1251.
Jeanne Du Loir [Parents] was born in 1207/1234. She died in 1256/1324. She married Jean de Brienne in 1251.
They had the following children:
F i Blanche de Brienne was born in 1213/1269. She died in 1302.
William de Fiennes was born in 1245 in Windover, Buckingham, England. He died on 11 Jun 1302 in Battle of Coutrain, West Flanders, Belgium. He married Blanche de Brienne.
Blanche de Brienne [Parents] was born in 1245 in Courtrain, Mayenne, France. She died in 1302. She married William de Fiennes.
They had the following children:
F i Margaret de Fiennes was born in 1262. She died on 7 Feb 1333/1334. F ii Joanna de Fiennes. M iii Jean de Fiennes. M iv Robert De Fienes.
John De Fienes [Parents] was born in 1277 in Pas-de-Calais, France. He died in 1331. He married Isabel de Dampierre.
Isabel de Dampierre.Isabel married John De Fienes.
Thomas Wake [Parents] was born on 20 Mar 1296/1297 in Cumberland, England. He died on 21 May 1349. He married Blanche Plantagenet.