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Female Sibella de Mitford Click to view Sibella de Mitford in the family tree

Sibella de was born about 1048 in Mitford Castle, Morpeth, Northumberland, England.  Sibella de's father was John de Mitford , Saxon Thane.  She was an only child.  Sibella de is no longer alive.


Sibella de's family with Richard Bertram , Sir Knight

They had a son named William I.

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