| Father | William BRERETON VII (1414 - 1485) |
| Mother | Philippa Elanor HULSE (1415 - 1463) |
| Sibling | Jane BRERETON (1454 - 1517) |
| Sibling | Sir Thomas BRERETON (1436 - 1500) |
| Sibling | William BRERETON (1438 - 1507) |
| Sibling | Henry BRERETON (1438 - ) |
| Sibling | Andrew DE BRERETON 11th Lord of Brereton (1440 - 1496) |
| Sibling | Eleanor BRERETON (1440 - 1497) |
| Sibling | Robert BRERETON (1440 - 1507) |
| Sibling | Matthew BRERETON (1440 - ) |
| Sibling | Henry BRERETON (1442 - 1473) |
| Sibling | Roger BRERETON (1444 - ) |
| Sibling | John DE BRERETON II (1447 - 1527) |
| Sibling | John BRERETON (1450 - ) |
| Sibling | Hugh BRERETON (1451 - 1527) |
| Sibling | Matilda BRERETON (1452 - ) |