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Female Isabel De St Lis Click to view Isabel De St Lis in the family tree

Isabel was born in , Huntingdon, England.  Isabel's father was Simon II De Of Northampton Earl and her mother was Isabel De Beaumont.  Her paternal grandfather was Simon De St Of Northampton Earl and her paternal grandmother is Maud Of Northumberlan; her maternal grandfather was Robert II De Beaumont Of Leicester II Earl and her maternal grandmother is Amicia De Gael. She had a half-sister named Hawise.


Isabel's family with William III Mauduit

They had two sons named William IV and Robert.

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