Children |
| 1. Ap Gruffudd Ieuan d. Yes, date unknown |
| 2. Howel Ap Ieuan Ap Madog, b. 1335, Mersuchs, Denbighshire, Wales d. Yes, date unknown |
| 3. Gruffudd Ap Ieuan, b. 1338, Cymydmaen, Caernarvonshire, Wales d. Yes, date unknown |
| 4. Madog Ap Ieuan, b. 1340, Cymydmaen, Caernarvonshire, Wales d. 1396, Y .. Somme, Picardie, France (Age 56 years) |
| 5. Miss Ferch Ieuan, b. Abt 1341, Of Penllech, Cymydmaen, Caernarvon, Wales d. Yes, date unknown |
| 6. Maredudd Ap Ieuan, b. 1342, Cymydmaen, Caernarvonshire, Wales d. 1353 (Age 11 years) |
| 7. Dafydd Ap Ieuan, b. Abt 1344, Of Penllech, Cymydmaen, Caernarvon, Wales d. Yes, date unknown |
| 8. Hywel Ap Ieuan, b. 1346, Cymydmaen, Caernarvonshire, Wales d. Yes, date unknown |
| 9. Dafydd Ap Meredydd Goch, b. 1375, Lleyn d. Yes, date unknown |
| 10. Meredydd Ap Dicws Llwyd, b. 1400, Lleyn, Caernarvonshire, Wales d. Yes, date unknown |
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