| Father | LLYWELYN AP HYWEL (1330 - ) |
| Mother | Mawd Verch Ieuan (1329 - ) |
| Sibling | Thomas AP LLEWELYN (1364 - ) |
| Sibling | Alice Verch LLYWELYN (1364 - ) |
| Sibling | Ffelis Verch LLYWELYN (1367 - ) |
| Sibling | Jonet Verch LLYWELYN (1371 - ) |
| Sibling | Elen Verch LLYWELYN (1373 - ) |
| Sibling | Dafydd "Gam" AP LLEWELYN [SIR KNIGHT] (1351 - ) |
| Sibling | Richard AP LLEWELYN (1353 - ) |
| Sibling | Jenkin AP LLEWELYN (1355 - ) |
| Sibling | HYWEL "y Coed" LLYWELYN (1356 - ) |
| Sibling | John AP LLYWELYN (1358 - ) |
| Sibling | GRUFFUDD AP LLEWELYN (1360 - ) |
| Sibling | Morgan AP LLEWELYN (1362 - ) |
| Sibling | Roger AP LLYWELYN (1374 - ) |