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Male William de la Plaunche Click to view William de la Plaunche in the family tree

William de was born about 1215 in Wendover Manor, Buckinghamshire, England.  William de's father was William De Fiennes and his mother was Agnes De Dammartin.  His paternal grandparents were Ingelram De Fiennes and Sibyl De Tingrie; his maternal grandparents were Alberic II de Dammartin and Mathilda De Clermont. He had three brothers and two sisters, named Ingelram Enguerrand, Baldwin, Michel, Mahaut and Maud.  He was the youngest of the six children.


William de's family

He had a biological son named William.

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