| Female Sibyl de Ferrers |
| Birth | ||
| Death | ||
| Burial | ||
| Father | William de Ferrers, 4th Earl of Derby | F4176 Group Sheet | |
| Mother | Agnes, of Chester | F4176 Group Sheet | |
| Male Lord Of Appleby Robert De Vieuxpont |
| Birth | 1239 | |
| Death | 7 Jun 1264 | |
| Burial | ||
| Spouse | Isabel Fitzjohn | F4154 | |
| Marriage | ||