Arbre d'ascendance:
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William Ferrers < Agnes de Ferrers < Isabella de Ferrers < Maud (Matilda) de Ferrers < Sibyl de Ferrers < Joan de Ferrers < Agatha de Ferrers < Eleanor de Ferrers < John de Ferrers Walter Dunstanville Ingeram Pratellis Frères et sœurs Margaret Marshall Maud (Matilda) Marshall Eve Marshall Gilbert Marshall William Marshall Richard Marshall Joane Marshall Anselm Marshall Isabel Marshall Walter Marshall |