| Eltern | Geschwister | Kinder |
| Llywelyn Wales | Gwladys Llewelyn | Robert Quincy |
| Ellen Iorwerth | Anne Quincy | |
| Joan Plantagenet | Gruffudd Llywelyn | Joane Quincy |
| Gwenllian Llywelyn | Hawise Quincy | |
| Margaret ap Llewelyn | ||
| Dafydd Llywelyn | ||
| Helena Wales | ||
| Margaret | ||
| Angharad Llywelyn | ||
| Miss Llywelyn | ||
| Partner | ||
| Robert Quincy |