See also
| Husband: | Llwelyn ap Iorwerth of GWYNEDD (c. 1173-1240) | |
| Wife: | Tangwystl verch Llywarch ( - ) | |
| Children: | Gwladys verch Llewellyn of GWYNEDD (c. 1205- ) | |
| Name: | Llwelyn ap Iorwerth of GWYNEDD | |
| Sex: | Male | |
| Father: | Iowerth Drwyndwn Ap Owain of GWYNEDD (c. 1145-1174) | |
| Mother: | Marared Ferch Madog of POWYS (c. 1150-1198) | |
| Birth | c. 1173 | Aberffraw Castle, Aberconway, Wales |
| Occupation | Prince of Gwynedd | |
| Death | 12 Apr 1240 (age 66-67) | Arllechwedd Isaf, Caernarvonshire, Wales |
| Name: | Tangwystl verch Llywarch | |
| Sex: | Female | |
| Father: | - | |
| Mother: | - | |
| Name: | Gwladys verch Llewellyn of GWYNEDD | |
| Sex: | Female | |
| Spouse 1: | Ralph de MORTIMER (c. 1190-1246) | |
| Spouse 2: | Reginald de BRAOSE (c. 1180- ) | |
| Birth | c. 1205 | |
Daughter's mother is not his wife. His line goes back to 100AD. Llewelyn had six other children with two other wives.