William I De Dampierre Seigneur 
William I was born about 1135 in , , , France. William I's father is Gui I De Dampierre Seigneur and his mother was Helvide De Baudmont. His paternal grandfather was Thibaud II De Dampierre Seigneur and his paternal grandmother is Isabel (Alice Or De Montlheri; his maternal grandfather was Andre De Baudmont Seigneur and his maternal grandmother is Agnes De Braine Heiress. He had two sisters named Helvide and Agnes. He died before 1162. He was buried before 1162.-
Ancestor Pedigree Chart
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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.~ 0980 d.< 1050
- b.~ 1010 d.~ 1050
- b.~ 0980
- d.1078
- d.1110
- b.~ 1100 in , , , France
- b.~ 1000 in Montlhery, , , France d.1095 in A Monk, Longpopnt
- b.~ 0990
- b.~ 1045 in Montlhery, , , France d.1118
- b.~ 0975
- b.~ 1014 in , , , Normandy
- b.~ 1075 in Montlhery, , , France
- b.~ 0978 in , , , France d.26 Jan 1057
- b.~ 1015 d.> 1076
- b.~ 0990 in , , , France d.26 Jan 1057 in A Nun
- b.~ 1035 d.~ 1112
- b.~ 1020 d.18 Sep 1066
- b.~ 1135 in , , , France d.< 1162
- b.~ 1060 in , , , France d. in A Monk
- b.~ 1105 in , , , France d.1165
- b.~ 1064 in , , , France
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Children
Gui II De Dampierre Seigneur
Gui II was born about 1160 in , , , France. He died on January 18th, 1216. He was buried in 1216 in St Laumesin, , Blois, France.
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