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Female Mahaut de Fiennes Click to view Mahaut de Fiennes in the family tree

Mahaut's father was William de Fiennes Sheriff of Somerset and her mother was Agnes de Dammartin.  Her maternal grandparents were Alberic II de Dammartin Ct de Dammartin and Maud de Clermont de Ponthieu. She had two brothers named Baldwin and Sir Enguerran de Fiennes II.

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