Family: William de Ferrers / Agnes de Meschines (F1489)
m. 1192William de Ferrers, Earl of Derby (1136-1190) 
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Sybil de Braose (1157- )
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Agatha de Ferrers (1168- )  |
| Son de Ferrers (1168- ) |
| Millicent de Ferrers (1170- ) |
| Son de Ferrers (1170- ) |
| Son de Ferrers (1172- ) |
| Robert de Ferrers (1177-1227) |
| Agnes de Meschines (1174-1247) |
| William de Ferrers (1162-1246)
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| William de Ferrers, Earl of Derby (1200-1254) |
| Thomas de Ferrers (1202- ) |
| Hugh de Ferrers (1204-1257) |
| Robert de Ferrers (1206-1279) |
| Sybil de Ferrers (1216- ) |
| Berta de Ferrers (1256- ) |
| Hugh de Ferrers (1304- ) |