Ancestry Research in Ireland

| Name | Llywelyn the Great | |
| Birth | Abt. 1173 | |
| Gender | Male | |
| Death | 11 Apr 1240 | |
| Person ID | I99 | O'Brien Genealogy |
| Last Modified | 22 May 2026 | |
| Father | Iorwerth Drwyndwn, b. Abt. 1130 d. 1174, Pennant-Melangell, Powys, Wales (Age 44 years) | |
| Mother | Marared ferch Madog | |
| Family ID | F50 | Group Sheet | Family Chart |
| Family 1 | ||||
| Children |
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| Family ID | F51 | Group Sheet | Family Chart | ||
| Last Modified | 22 May 2026 | |||
| Family 2 | ||||
| Children |
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| Family ID | F52 | Group Sheet | Family Chart | ||
| Last Modified | 22 May 2026 | |||
| Family 3 | Joan Plantagenet | |
| Family ID | F53 | Group Sheet | Family Chart |
| Last Modified | 22 May 2026 | |
| Family 4 | Tangwystl ferch Llywarch | |||
| Children |
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| Family ID | F54 | Group Sheet | Family Chart | ||
| Last Modified | 22 May 2026 | |||
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