| Father | William VI Brereton (1390 - 1459) |
| Mother | Lady Alice Corbet (1389 - 1458) |
| Sibling | Randolph Randall Brereton (1422 - ) |
| Sibling | Ralph Brereton (1424 - ) |
| Sibling | Thomas Bruerton Sr 1st Sir (1420 - 1505) |
| Sibling | Maud de Brereton (1420 - 1451) |
| Sibling | Isabell Johanna Brereton (1418 - 1463) |
| Sibling | Margery Brereton (1425 - ) |
| Sibling | Lord William VIII Brereton 10th of Brereton (1414 - 1456) |
| Sibling | Alice Elizaberth Brereton (1407 - 1497) |
| Sibling | Alice Brereton ( - ) |
| Sibling | Hugh Brereton (1404 - ) |
| Sibling | Joan Brereton ( - ) |
| Sibling | Roger Brereton (1403 - ) |
| Sibling | Elizabeth de Beeston (1397 - 1455) |