The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
 MaleGruffudd ab Iorwerth |
| Birth | Abt 1300 | of, Ystrad-y-fodwg, Llantrisant, Glamorganshire, Wales  |
| Christening | {Tribe: Drymbenog} |
|
| Death | Aft 1358 | |
| Burial | ||
| Marriage | ||
| Father | Iorwerth ab Ieuan | F279258 Group Sheet | |
| Mother | ||
| Male Gruffudd "Fychan" ap Gruffudd |
| Birth | Abt 1330 | of, Ystrad-y-fodwg, Llantrisant, Glamorganshire, Wales |
| Christening | {Tribe: Drymbenog} |
|
| Death | Yes, date unknown | |
| Burial | ||
| Spouse | [unknown] ferch Ieuan "Madi" | F271268 | |
| Marriage | ||
| Male + Ieuan ap Gruffudd |
| Birth | Abt 1330 | of, Llantrisant, Glamorganshire, Wales |
| Christening | {Tribe: Drymbenog} |
|
| Death | Yes, date unknown | |
| Burial | ||
| Spouse | [unknown] ferch Hywel | F271842 | |
| Marriage | ||
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