Isabel de Ros 
Isabel de was born in 1256 in Belvoir Castle, Leicestershire, England. Isabel 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 and Lucy FitzPiers; her maternal grandparents were William II de Albini , Lord of Belvoir and Isabel. She had a brother and two sisters, named William III 1st Baron de, Mary de and Joan de. She was the youngest of the four children. She died at the age of 53 in 1309.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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*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)
- b.> 1145 in Helmsley Castle, North Ride Yorkshire, England d.1183
- b.~ 1169 in Ros, Holderness, East Ride Yorkshire, England d.<23 Dec 1226 in Helmsley Castle, North Ride Yorkshire, England
- b.~ 1151 in Ingmanthorpe, Kirk Deighton, Yorkshire, England d.~ 1196
- b.~ 1196 in Helmsley Castle, North Ride Yorkshire, England d.1264 in Poitou, France
- b.1143 in Huntingdon, Huntingdonshire, England d.04 Dec 1214 in Stirling Castle, Stirlingshire, England
- b.~ 1169 in Huntingdon, Huntingdonshire, England
- b.~ 1143 in Edinburgh, Midlothian, Scotland d.~ 1185 in Stirling Castle, Stirlingshire, England
- b.1233 in Helmsley Castle, North Ride Yorkshire, England d.17 May 1285 in Belvoir Castle, Leicestershire, England
- b.< 1144 in Blaen Llyfni, Brecknockshire, Wales d.<Jun 1204
- b.~ 1163 in Blewleveny Castle, Blaen Llyfni, Brecknockshire, Wales d.<06 Jun 1235
- b.~ 1142 in Bwlch y Dinas, Brecknockshire, Wales d.> 1219 in Blaen Llyfni, Brecknockshire, Wales
- b.~ 1208 in Brecknock, Wales d.> 1266
- b.~ 1141 in Warkworth Castle, Alnwick, Northumberland, England d.1178
- b.< 1177 in Warkworth Castle, Alnwick, Northumberland, England d.1212 in Warkworth Castle, Alnwick, Northumberland, England
- b.< 1141 in Hedingham, Essex, England d.> 1185 in Warkworth Castle, Alnwick, Northumberland, England
- b.~ 1185 in Warkworth Castle, Alnwick, Northumberland, England d.1225
- b.~ 1125 in Horsford, Norfolk, England d.1174
- b.~ 1165 in Horsford, Norfolk, England d.1214 in Warkworth Castle, Alnwick, Northumberland, England
- b.~ 1140 in Poynings, Sussex, England
- b.1256 in Belvoir Castle, Leicestershire, England d.1309
- b.1113 in Belvoir Castle, Leicestershire, England d.< 1168 in Belvoir Castle, Leicestershire, England
- b.> 1146 in Belvoir Castle, Leicestershire, England d.01 May 1236 in Offington, England
- b.~ 1075 in Tunbridge, Kent, England d.1134 in Little Dunmow, Essex, England
- b.< 1134 in Little Dunmow, Essex, England
- b.1093 in Tunbridge, Kent, England d.1140 in Belvoir Castle, Leicestershire, England
- b.~ 1170 in Belvoir Castle, Leicestershire, England d.17 Oct 1242 in Banks, England
- b.1094 in Forest & Vale, Redsedale, Northumberland, England d.1162 in Prudhoe, Hexham, Northumberland, England
- b.~ 1125 in Prudhoe, Hexham, Northumberland, England d.1182 in Castle Prudhoe, Northumberland, England
- b.1152 in Castle Prudhoe, Northumberland, England d.1208 in Belvoir Castle, Leicestershire, England
- b.~ 1098 in Diss, Norfolk, England d.14 Jul 1179 in Chipping Ongar, Essex, England
- b.1129 in Lucy, Maine, Normandy, France d.1197 in Castle Prudhoe, Northumberland, England
- b.1090 in Ely, Cambridgeshire, England d.1179 in Holy Trinity Church, London, England
- b.BET 1233 AND 1235 in Belvoir Castle, Leicestershire, England d.15 Jun 1301 in Newstead, Lincolnshire, England
- b.BET 1233 AND 1235 in England d.> 1285 in Belvoir Castle, Leicestershire, England
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