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 | 2nd Earl of Derby Robert de Ferrers, II (1100-1162)
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 | Margaret Peverel (1100- ) |
 | 3rd Lord of Bramber William de Braose, II (1135-1179)
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 | Bertha de Pitres (1130-1204)
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| Bertha de Braose (1167-1200)  |
| Lord Brecknock of Bramber, 11th Lord of Abergavenny, 5th Baron de Braiose William de Braose, III (1153-1211) |
| Sybil de Braose (1157-1228)
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| 3rd Earl of Derby Sir William de Ferrers, I (1140-1190)
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| 4th Earl of Derby Sir William de Ferrers, II (1168-1247) |
We make every effort to document our research. There is a lot of information that I do not have, and I know there are mistakes in this tree. My feelings will not be hurt if you give me corrections or additional information, especially if you can provide sources for the information.
