| Eltern | Geschwister | Kinder |
| Gwladys Llewelyn | ||
| Ellen Iorwerth | ||
| Gruffudd Llywelyn | ||
| Gwenllian Llywelyn | ||
| Margaret ap Llewelyn | ||
| Dafydd Llywelyn | ||
| Helena Wales | ||
| Llywelyn Wales | Margaret | |
| Angharad Llywelyn | Elena maelgon vychan | |
| Joan Plantagenet | Miss Llywelyn | verch phillip |
| Partner | ||
| Maelgwn Maelgwn | ||
| Philip ivor or ifor |