Cadwgon ap Elystan , of Buillth
Cadwgon ap was born about 0985 in Buillth, Breconshire, Wales.  Cadwgon ap is no longer alive.

 Efa verch Gwrgan
Efa verch was born about 1000 in Glamorgan, Wales.

 Iorwerth ap Cadwgon
Iorwerth ap was born about 1020 in Buillth, Breconshire, Wales.

 Joan verch Cadwgon
Joan verch was born about 1022 in Radnorshire, Wales.