| Father | Thomas de Holland 2nd Earl of Kent & 3rd Baron de Holland ( - ) |
| Mother | Lady Alice fitz-Alan Countess Kent (1352 - ) |
| Sibling | Margaret de Holand Countess of Somerset (1386 - 1439) |
| Sibling | Eleanor de Holand (1373 - 1405) |
| Sibling | Margaret de Holland Duchess of Clarence (1385 - 1439) |
| Sibling | Elizabeth Neville (1388 - 1423) |
| Sibling | John de Holland (1395 - 1447) |
| Sibling | Joan Holland (1400 - 1431) |
| Sibling | Bridget de Holland (1395 - 1416) |
| Sibling | Sir Edmund Holland 4th Earl of Kent (1382 - 1408) |
| Sibling | Thomas Holland Duke of Surrey (1374 - 1399) |
| Sibling | Richard de Holand (1378 - 1397) |