The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
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Gwyn ab Iorwerth |
 Abt 1270 - Aft 1313 (44 years) |
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Einion ab Iorwerth |
| Abt 1270 - Yes, date unknown |
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Robert ab Iorwerth |
| Abt 1270 - Aft 1339 (70 years) |
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Catrin ferch Iorwerth |
 Abt 1270 - Yes, date unknown |
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Ieuan ab Iorwerth |
| Abt 1270 - Yes, date unknown |
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Madog ab Iorworth, Bishop of Bangor |
| Abt 1270 - Aft 1357 (88 years) |
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Ieuan ab Iorwerth |
| Abt 1270 - Yes, date unknown |
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Nest ferch Iorwerth |
| Abt 1270 - Yes, date unknown |
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Iorwerth ap Rhirid |
| Abt 1230 - Aft 1305 (76 years) |
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Gronwy ab Iorwerth |
| Abt 1270 - Yes, date unknown |
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Gruffudd ab Iorwerth |
| Abt 1270 - Yes, date unknown |
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[unknown] ab Iorwerth |
| Abt 1270 - Yes, date unknown |
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Morfudd ferch Madog "Gôch" |
| Abt 1230 - Yes, date unknown |
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Iorwerth ap Gronwy |
| Abt 1230 - Aft 1278 (49 years) |
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