| Children |
| | 1. Ednyfed ap Maredudd, b. 1230, Anglesey, Wales, United Kingdom d. DECEASED |
| | 2. Gronwy ap Maredudd, b. 1232, Anglesey, Wales, United Kingdom d. DECEASED |
| | 3. Hywel ap Iorwerth, b. 1236, Anglesey, Wales, United Kingdom d. DECEASED |
| | 4. Gruffudd Ap Maredudd, b. 1238, Menai Bridge, Gwynedd, Wales, United Kingdom d. DECEASED |
| | 5. llewelyn Ap Levan Ap Llewelyn Ap Cynfig, b. 1410, Llanddaniel Fab, Anglesey, Wales d. After About 1430 (Age 20 years) |
| | 6. Hywel ap Iorwerth, b. 1505, Anglesey, Wales, United Kingdom d. DECEASED |
| | 7. Ednyfed ap Maredudd, b. Penrhosllugwy, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 8. Angharad ferch Llywelyn, b. Llanddaniel Fab, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 9. Dafydd ap Hywel, b. Llanfechell, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 10. Gwenhwyfar ferch Hywel, b. Llanfechell, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 11. Gwilym ap Hywel, b. Llanfechell, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 12. Gwilym ap Rhys, b. Menai Bridge, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 13. Madog ap Einion, b. Llanddaniel Fab, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 14. Mallt Ferch Gwilym, b. Church of St Mechell, Anglesey, Wales d. DECEASED |
| | 15. Maredudd ap Adda, b. Llanddaniel Fab, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 16. Nest ferch Hywel, b. Llanfechell, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 17. Robert ap Hywel, b. Llanfechell, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
| | 18. Tudur ap Llywelyn, b. Llanddaniel Fab, Isle of Anglesey, Wales, United Kingdom d. DECEASED |
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