| 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 | |
| Agnes Ferrers | Hawise MUsCEGROS | |
| Margaret Quincy | Joan Ferrers | |
| Partner | ||
| Robert MUsCEGROS |