Member Information
| Full Name | ♂️ William de Ferrers, 4th Earl of Derby -  |
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| Birth | #1 | Date of Birth | 1162 |
| Place of Birth | Ferrers, Derby, Derbyshire, England | ||
| Father | William de Ferrières, 3rd Earl of Derby | ||
| Spouse | #1 | Name | Agnes de Meschines of Chester |
| Children | ♂️ Sir William III Ferrers, 5th Earl of Derby | ||
| Death | #1 | Date of death | 22 SEP 1247 |
| Place of death | Evington, Leicestershire | ||