| Eltern | Geschwister | Kinder |
| Joan Clare | ||
| Gilbert Clare | Maud Clare | Robert Plumpton |
| Avicia Clare | Alice Plumpton | |
| Isabel Marshal | Susan Clare | Avice Plumpton |
| Amica Clare | ||
| Richard Clare | ||
| Isabella Gloucester | ||
| Adeliza Clare | ||
| William Clare | ||
| Agnes Clare | ||
| Gilbert Clare | ||
| John Plantagenet | ||
| Isabella England | ||
| Henry Plantagenet | ||
| Nicholas England | ||
| Partner | ||
| Nigel Plumpton |