World of HYDE
Discovering our Ancestors and their descendants to all parts of the world. Last updated 15th March 2026.
Family: William De Ferrers III, 5th Earl Of Derby / Margaret De Quincy, Countess Of Derby (F64537)
m. 1238
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 | William De Ferrers, 4th Earl Of Derby (1162-1247)
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 | Agnes De Meschines (1174-1247)
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| Berthe de Ferrers (1205-1280)  |
| Sybil De Ferrers (1216-1246) |
| Roger De Quincy, 2nd Earl Of Winchester (1195-1264)
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| Helen Canmore, Countess Of Galloway (1201-1245)
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| Elizabeth De Quincy (1220-1303) |
| Helen De Quincy (1222-1296) |
| William De Ferrers III, 5th Earl Of Derby (1193-1254)
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| Margaret De Quincy, Countess Of Derby (1218-1284)
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| Elizabeth De Ferrers ( -1297) |
| Sir Robert De Ferrers, 6th Earl Of Derby (1239-1279) |
| William De Ferrers, Constable Of Scotland (1240-1287) |
| Joan De Ferrers, Baroness Berkeley (1248-1309) |