| Eltern | Geschwister | Kinder |
| Maud Lacy | ||
| Agnes Ferrers | ||
| Idonea Lacy | ||
| Isabella Ferrers | ||
| Maud Ferrers | ||
| Edmund Lacy | ||
| Sibyl Ferrers | ||
| Joan Ferrers | ||
| Agatha Ferrers | ||
| Eleanor Ferrers | ||
| John Ferrers | ||
| Robert Ferrers | ||
| William Ferrers | William Ferrers | |
| Fulk Ferrers | Joan Ferrers | |
| Margaret Quincy | Agnes Ferrers | |
| Joan Ferrers | ||
| Partner | ||
| Mary Helion |