| Iorwerth Ap Owain & Margred Verch Madog | |
| Husband | Wife |
| Iorwerth Ap Owain | Margred Verch Madog |
|
b: 1145 Aberffraw Castle, Aberffraw. Anglsy, Wales d: about 1184 |
b: about 1129 Of, Montgomeryshire, Wales |
| Marriage: about 1163. | |
| Parents | |
| Owain "Gwynedd" Ap Gruffydd (~1087 - 1169) | Madog Ap Maredydd (~1091 - 1160) |
| Gwladus Verch Llywarch (~1098 - ) | Susanna Verch Gruffydd (~1095 - ) |
| Grand Parents | |
| King Gruffydd Ap Cynan (1055 - 1137) | Maredudd Ap Bleddyn (~1047 - 1124/1129) |
| Angharad Verch Owain (~1065 - 1162) | Hunydd Verch Einudd (~1063 - ) |
| Dinawal Ap Tudwal (~1070 - 1128) | King Gruffydd Ap Cynan (1055 - 1137) |
| Dyddgu Verch Iowerth (~1060 - ) | Angharad Verch Owain (~1065 - 1162) |
| Children (Family Detail) | |
| Llewelyn Ap Iorwerth | - b: 1173 Aberffraw Castle, Caernarvonshire, Wales |