Tewdwr Mawr ap Cadell
Tewdwr Mawr ap was born about 0960 in Dynevor Castle, Llandilo, Carmarthenshire, Wales.  He died in Pen Rhys, Wales.

 Gwenllian verch Gwyn
Gwenllian verch was born about 0964 in Wales.

 Rhys ap Tewdwr Mawr
Rhys ap Tewdwr was born about 0997 in Carmarthenshire, Wales.  He died in 1093 in Brecon, Breconshire, Wales.

 Elen verch Tewdwr Mawr
Elen verch Tewdwr was born about 1004 in Dynevor Castle, Llandilo, Carmarthenshire, Wales.  She died in 1065.

 Gryffydd ap Tewdwr Mawr
Gryffydd ap Tewdwr was born in Dynevor Castle, Llandilo, Carmarthenshire, Wales.