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Male William III De Ros Click to view William III De Ros in the family tree

William III was born about 1290 in Helmsley, York, England.1   William III's father was William II De Ros and his mother was Maud De Vaux.  His paternal grandparents were Robert De Ros and Isabel D'Albini; his maternal grandparents were John De Vaux and Sibyl.  He was an only child.  He died on February 3rd, 1343 in Bur Kirkham, Lincs., England.1 

Family Details of William III's family with Margery von Badlesmere

1 World Family Tree Vol. 9, Ed. 1 @ Tree #0120

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