| Father | Richard Craydocke Sir Knight Newton Gloucestershire Newton (1398 - 1448) |
| Mother | Emma Lady of Haroldston St Issells, Pembroke Perrott (1410 - 1488) |
| Sibling | John Craddock Newton II (1447 - 1488) |
| Sibling | Sir Richard of Tre Newydd, Newcastle, Wales Newton (1435 - 1524) |
| Sibling | Mathew Sir Abertawe Gwyr Is Cradock Newton (1439 - 1551) |
| Sibling | Thomas Newton (1440 - 1487) |
| Sibling | Peter Sir Tabley Chesh Newton (1442 - 1524) |
| Sibling | Thomas Richard Newton (1440 - 1507) |
| Sibling | John Newton (1437 - 1487) |
| Sibling | John Newton (1488 - ) |