The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
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 | Rhys ap Gruffudd (1230-1284)
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 | Margaret le Strange (1230- )
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| Cynan ap Maredudd (1230-1295) |
| Jonet ferch Cynan (1270- )  |
| Sir Gruffudd "Llwyd" ap Rhys, Knight (1270-1335)
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| Gwenllian ferch Cynan (1270- )
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| Gwenllian ferch Gruffudd "Llwyd" (1300- ) |
| Ieuan ap Gruffudd "Llwyd" (1300- ) |
| Teili ferch Gruffudd "Llwyd" (1300- ) |
| Philippa ferch Gruffudd "Llwyd" (1300- ) |
| Crisli ferch Gruffudd "Llwyd" (1300- ) |
| Lleucu ferch Gruffudd "Llwyd" (1300- ) |
| Cecily ferch Gruffudd "Llwyd" (1300- ) |
| Elsbeth ferch Gruffudd "Llwyd" (1330- ) |
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