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

Mary De was born about 1253 in Helmsley Castle, North Ride Yorkshire, England.  Mary De's father was Robert IV "1St Baron" De Ros Of Belvoir, Mp and her mother was Isabel De Albini Heiress Of Belvoir.  Her paternal grandparents were William I De Ros Mp, Lord Of Helmsley, Sir/Roos and Lucy Fitzpiers; her maternal grandparents were William De Albini Lord Of Belvoir and Aubrey Albreda Biset. She had a brother and two sisters, named William III 1St Baron De, Joan De and Isabel.  She was the oldest of the four children.  She died before May 23rd, 1326.

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