The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
 MaleSyr Gronwy ab Ieuan |
| Birth | Abt 1370 | of, Casllwchwr, Glamorganshire, Wales  |
| Christening | {Tribe: Iestyn ap Gwrgan} |
|
| Death | Yes, date unknown | |
| Burial | ||
| Marriage | ||
| Other Spouse | [unknown] ferch Gwlhafed "Fychan" | F10188 | |
| Marriage | Not Married | |
| Other Spouse | Jane ferch Gruffudd | F10189 | |
| Marriage | Not Married | |
| Father | Ieuan ap Lleision | F6696 Group Sheet | |
| Mother | Efa ferch Llywelyn | F6696 Group Sheet | |
 FemaleJonet ferch Hywel "Melyn" |
| Birth | Abt 1400 | of, Ynys Derw, Rhyndwyglydach, Glamorganshire, Wales |
| Christening | {Tribe: Bleddyn ap Maenyrch} |
|
| Death | Yes, date unknown | |
| Burial | ||
| Father | ||
| Mother | ||
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