Family: Merdydd Ap Henry Dwinnn / Mallt Verch Gruffydd (F7943)
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 | Henry Ap Griffith Dwnn (1330-1411) |
 | Margred Ferch Ieuan (1337-1401) |
| Griffith Ap Cadwgan Fychan (1332-1383) |
| Isabel Ferch Rhys Llwyd (1335-1362) |
| Merdydd Ap Henry Dwinnn (1354-1401)
|
| Mallt Verch Gruffydd (1362-1410)
|
| Mabli Ferch Maredudd (1400-1438)  |