| Eltern | Geschwister | Kinder |
| Agnes Ferrers | ||
| William Ferrers | Isabella Ferrers | |
| Maud Ferrers | Joan Vivonne | |
| Sybilla Marshall | Sibyl Ferrers | Cecilia Vivonne |
| Joan Ferrers | ||
| Agatha Ferrers | ||
| Petronilla Dunstanville | ||
| Eleanor Ferrers | ||
| John Ferrers | ||
| Robert Ferrers | ||
| William Ferrers | ||
| Fulk Ferrers | ||
| Agnes Ferrers | ||
| Joan Ferrers | ||
| Partner | ||
| William Vivonne |