The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
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 | Gwilym ap Llywelyn "Ddû" (1330-1356)
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 | Margred ferch Einion "Cest" (1330- )
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| Nest "y Gryg" ferch Gwilym (1350- )  |
| Gwallter ap Gwilym (1350- ) |
| Catrin ferch Gwilym (1350- ) |
| Ieuan ap Gwilym (1350- ) |
| Cunedda ap Gwilym (1350- ) |
| Gruffudd ap Gwilym (1370- ) |
| Jenkin ap Gwilym (1370- ) |
| Gruffudd ap Cadwgon "Fychan" (1300-1384)
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| Isabel ferch Rhys "Llwyd" (1330- )
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| Joan ferch Gruffudd (1330- ) |
| [unknown] ferch Gruffudd (1330- ) |
| Margred ferch Gruffudd (1330- ) |
| Jonet ferch Gruffudd (1330- ) |
| Efa ferch Gruffudd (1330- ) |
| Ieuan ap Gruffudd (1330- ) |
| [unknown] ferch Gruffudd (1350- ) |
| Mallt ferch Gruffudd (1350- ) |
| [unknown] ferch Gruffudd (1350- ) |
| Einion ap Gwilym (1350- )
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| Dyddgu ferch Gruffudd (1330- )
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| Gwenllian ferch Einion (1370- ) |
| Syr Dafydd ab Einion (1370- ) |
| Dyddgu ferch Einion (1370- ) |
| Morgan ab Einion (1370- ) |
| Ieuan "Gôch" ab Einion (1370- ) |
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