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Female Mary De Vernon Click to view Mary De Vernon in the family tree

Mary was born about 1196 in Reviers and Okehampton, Devonshire, England.  Mary's father was William De Vernon and her mother is Mabel De Beaumont.  Her paternal grandfather was Baldwin De Rivers and her paternal grandmother is Adeliza Lucia De Baalum; her maternal grandfather was Robert De Beaumont and her maternal grandmother is Maud De Dunstanville.  She is an only child.


Mary's first family with Robert De Courtenay

‌Mary and Robert were married in a religious ceremony in 1213.  They had a daughter named Catherine.


Mary's second family with Pierre De Preaux

‌Mary and Pierre were married in a religious ceremony about 1259.

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