| Name | William De Ferrers | |
| Suffix | [Sir Knight] | |
| Born | Abt 1239 | Of, Groby, Leicestershire, England |
| Gender | Male | |
| AFN | 9FSB-63 | |
| Died | 13 Dec 1287 | |
| Person ID | I19136 | Smoky Mountain Ancestral Quest |
| Last Modified | 12 Jan 2001 | |
| Father | William Ferrers, Earl of Derby, b. Abt 1199, Of, Derbyshire, England | |
| Mother | Margaret De Quincy, b. Abt 1217, Of, Winchester, Hampshire, England | |
| Married | 1237 | |
| Family ID | F6838 | Group Sheet |