Isabel De Ros 
Isabel De was born about 1276 in Ingmanthorpe, Kirk Deighton, Yorkshire, England. Isabel De's father was Sir William II De Ros Roos and her mother was Eustache Fitzhugh. Her paternal grandparents were William I De Ros Mp, Lord Of Helmsley, Sir/Roos and Lucy Fitzpiers; her maternal grandfather was Ralph Fitzhugh. She had two sisters named Lucy De and Ivetta (Juetta) De. She was the second oldest of the three children. She died before December 31st, 1318 in Kilton Castle, Cleveland, Yorkshire, England.General Notes
Many people have the same Isabel de Ros married to both Marmaduke de Thweng and Walter de Faucomberge. Certainly Magna Charta Sureties and Ancestral Roots don't mention that the Isabel which married Walter de Faucomberge also married anyone else. Plus the birth dates of the children of both marriages tend to be intermixed, 1290's and early 1300's, leading one to question which was the first or the second marriage, and indeed whether there were two "Isabel de Ros"s, of two different parents. According to the Extinct Peerages (see notes under Marmaduke de Thweng), Marmaduke's Isabel was daughter of William of Ingmanthorpe. Sometimes the Extinct Peerages has proven unreliable, but in this case I believe that it is correct, where Walter's wife Isabel is daughter of Robert de Ros as indicated by MCS & AR.
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Ancestor Pedigree Chart
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- b.~ 1167 in Ros, Holderness, East Ride Yorkshire, England d.<23 Dec 1226 in Helmsley Castle, North Ride Yorkshire, England
- b.~ 1196 in Helmsley Castle, North Ride Yorkshire, England d.1264 in Poitou, France
- b.~ 1165 in Haddington, East Lothian, Scotland d.Oct 1263
- b.~ 1240 in Ingmanthorpe, Kirk Deighton, Yorkshire, England d.<28 May 1310
- b.~ 1163 in Blewleveny Castle, Blaen Llyfni, Brecknockshire, Wales d.01 Jun 1235
- b.~ 1208 in Brecknock, Wales d.> 1266
- b.~ 1185 in Warkworth Castle, Alnwick, Northumberland, England d.1225
- b.~ 1276 in Ingmanthorpe, Kirk Deighton, Yorkshire, England d.<31 Dec 1318 in Kilton Castle, Cleveland, Yorkshire, England
- b.~ 1195 in England
- b.~ 1225 in Greasley, Nottinghamshire, England
- b.~ 1200 in Greasley, Nottinghamshire, England
- b.~ 1250 in Greasley, Nottinghamshire, England d.< 1310 in Grey Friars, Yorkshire, England
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Isabel De and Marmaduke 1St Baron De were married in a religious ceremony in 1273 in Kilton, Yorkshire, England.
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