Madog ap Rhys
Madog was born about 1225 in Radnorshire, Wales.  He died after 1292.

 Tanglwyst verch Gronwy
Tanglwyst was born about 1230 in Gwrinydd, Glamorgan, Wales.

 Trahaearn ap Madog
Trahaearn was born about 1250 in Llyn, Caernarvonshire, Wales.  He died after 1273 in Tower Of London, London, Middlesex, England.