| Father | Gruffudd ap Gwenwynwyn (1215 - 1286) |
| Mother | Hawise le Strange (1228 - 1310) |
| Sibling | Margaret de la Pole (1258 - 1336) |
| Sibling | Gwilym ap Gruffydd (1245 - 1293) |
| Sibling | Dafydd ap Gruffudd (1254 - ) |
| Sibling | Madog Ap Gruffydd (1254 - ) |
| Sibling | Llewellyn ap Gruffydd (1255 - 1289) |
| Sibling | Owen de la Pole (1257 - 1293) |
| Sibling | Owain ap Griffith Del la Pole Prince Of Upper Powys (1257 - 1293) |
| Sibling | John ap Gruffydd (1258 - ) |
| Sibling | Elinor verch Gruffydd (1262 - ) |
| Sibling | Lord William de la Pole of Mawddwy (1264 - 1315) |
| Sibling | Lewis De La Pole (1268 - ) |