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Male William De St. Pierre Click to view William De St. Pierre in the family tree

William De was born about 1103 in St. Pierre and Runstone, Chepstow, Monmouthshire, Wales.  William De's father was Ranulph III de Meschines 3rd Earl of Chester, Viscount Bayeux and his mother was Countess Lucia Taillebois Countess of Chester.  His paternal grandparents were Ranulph II Of Bayeux Vicomte of Bayeux and Maud (Margaret) D' Avranches; his maternal grandparents were Ives (Ivo) de Taillebois , 1st Baron of Kendal and Lucia of Mercia. He had a brother and four sisters, named Ranulph de, Adeliza de, Alice Of, Agnes Le and N.N.. He had a half-brother named William de.


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