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Female Isabel de Roos Click to view Isabel de Roos in the family tree

Isabel was born about 1256 in Igmanthorpe, England.  Isabel's father was Lord Robert de Ros III of Helmsley and her mother was Isabel d'Albini.  Her paternal grandparents were Sir William de Ros I of Hamlake & Helmsley and Lucia FitzPiers of Brecknock; her maternal grandfather was William d'Albini IV and her maternal grandmother is Albreda Biset. She had a brother and two sisters, named William, Joan and Mary.  She is the youngest of the four children.


Isabel's family with Lord Marmaduke de Thweng of Kilton

They had a daughter named Lucia.

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