| Name | Llywelyn Fawr Ap Iowerth | |
| Prefix | Prince of Wales | |
Relationship![]() | with Kathleen Alice Jones-Rouse | |
| Birth | 1173 | Dolwyddelan, Nantconwy, Wales, United Kingdom |
| Gender | Male | |
| Also Known As | Llywelyn Fawr, the Great, The Great | |
| Occupation | Prince of Wales | |
| To Lady Kathleen | Great GrandParent | |
| Death | 11 Apr 1240 | |
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| Person ID | I4914 | Enchanted Family Tree |
| Last Modified | 14 Mar 2012 | |
| Father | Iowerth Drwyndwn Ap Owain Mawr, b. 1125, Aberffraw Castle, Aberffraw, Anglesey, Wales, United Kingdom d. 1174, Pennant Melangell, , Wales, United Kingdom (Age 49 years) | |
| Mother | Margaret, of Powys | |
| Family ID | F1523 | Group Sheet | Family Chart |
| Family 1 | Tangwystyl Goch | |||||||
| Children |
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| Family ID | F1522 | Group Sheet | Family Chart | ||||||
| Last Modified | 14 Mar 2012 | |||||||
| Family 2 | Joan Plantagenet, b. 1188, London, Greater London, England, United Kingdom d. 2 Feb 1237, Aberconway, Caernarvon, Wales, United Kingdom (Age 49 years) | |
| Family ID | F1975 | Group Sheet | Family Chart |
| Last Modified | 14 Mar 2012 | |
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