| Male 3rd Lord Borthwick Lord William Borthwick |
| Birth | Between 1393 and 1503 | |
| Death | 1503 | |
| Burial | ||
| Marriage | ||
| Father | ||
| Mother | ||
| Female Agnes Borthwick |
| Birth | Between 1409 and 1497 | |
| Death | ||
| Burial | ||
| Spouse | Earl of Cassilis Lord David Kennedy | F0710 | |
| Marriage | Bef 9 Jul 1489 | |