| Father | Ieuan Llwyd ap IEUAN (1300 - 1392) |
| Mother | Angharad ferch RICHARD (1300 - 1343) |
| Sibling | Rhydderch ap IEUAN (1325 - ) |
| Sibling | Owain ap IEUAN (1322 - ) |
| Sibling | Maredudd ap IEUAN GLYNN (1240 - ) |
| Sibling | Gwenllian III VERCH IEUAN (1326 - ) |
| Sibling | Cathrine VERCH IEUAN LLWYD (1330 - ) |
| Sibling | Gruffydd "Gryg" ap IEUAN (1330 - ) |
| Sibling | Richard ap IEUAN (1334 - ) |
| Sibling | Rhys " Offeiriad" ap IEUAN (1336 - ) |
| Sibling | Cadwgon ap IEUAN (1340 - ) |
| Sibling | Gwenllian Ferch IEUAN LLWYD (1340 - ) |
| Sibling | Llywelyn ap IEUAN (1342 - ) |