| Father | Madog "Foel" ab Ieuaf ap Llywelyn ap Cynwrig "Efell" ap Madog ap Maredudd ap Bleddyn ap Cynfyn (1270 - ) |
| Mother | Efa ferch Dafydd (1270 - ) |
| Sibling | Lleucu FERCH MADOG FOEL of Eghwysegl (1329 - ) |
| Sibling | Dafydd ap Madog "Foel" ab Ieuaf ap Llywelyn ap Cynwrig "Efell" ap Madog ap Maredudd ap Bleddyn ap Cynfyn (1300 - ) |
| Sibling | Llywelyn ap Madog "Foel" ab Ieuaf ap Llywelyn ap Cynwrig "Efell" ap Madog ap Maredudd ap Bleddyn ap Cynfyn (1300 - ) |
| Sibling | Gwenhwyfar VERCH MADOG (1310 - ) |
| Sibling | Ieuaf ap Madog "Foel" ab Ieuaf ap Llywelyn ap Cynwrig "Efell" ap Madog ap Maredudd ap Bleddyn ap Cynfyn (1310 - ) |
| Sibling | Rheinallt Ap Madog FOEL (1310 - ) |