The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
 MaleIeuan ap Trahaearn, arglwydd of Baeli-brith |
| Birth | Abt 1270 | of, Baeli-brith, Dyffryn Honddu, Merthyr Cynog, Breconshire, Wales  |
| Christening | {Tribe: Maenyrch} |
|
| Death | Yes, date unknown | |
| Burial | ||
| Marriage | ||
| Father | Trahaearn ap Madog | F10040 Group Sheet | |
| Mother | Elen [1st] ferch Philip "Sais" | F10040 Group Sheet | |
 FemaleNest "Fechan" ferch Gruffudd |
| Birth | Abt 1300 | of, Llansadwrn, Carmarthenshire, Wales |
| Christening | {Tribe: Marchudd} |
|
| Death | Yes, date unknown | |
| Burial | ||
| Other Spouse | Llywelyn ap Gwilym | F11773 | |
| Marriage | ||
| Father | Gruffudd ap Hywel, arglwydd of Llansadwrn | F11989 Group Sheet | |
| Mother | Nest "Fechan" ferch Gwrwared | F11989 Group Sheet | |
| Male Dafydd ab Ieuan |
| Birth | Abt 1300 | of, Baeli-brith, Dyffryn Honddu, Merthyr Cynog, Breconshire, Wales |
| Christening | {Tribe: Maenyrch} |
|
| Death | Yes, date unknown | |
| Burial | ||
| Spouse | [unknown] ferch Llywelyn | F9706 | |
| Marriage | ||
| Spouse | [unknown] ferch Adda | F9454 | |
| Marriage | ||
| Male [unknown] ab Ieuan |
| Birth | Abt 1300 | of, Baeli-brith, Dyffryn Honddu, Merthyr Cynog, Breconshire, Wales |
| Christening | {Tribe: Maenyrch} |
|
| Death | Yes, date unknown | |
| Burial |
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