Llywarch ap Trahaearn
Llywarch was born about 1070 in Arwystli, Montgomeryshire, Wales.  He died in 1128 in North Wales.

 Dyddgu verch Iorwerth
Dyddgu was born about 1060 in Radnorshire, Wales.

 Gladys verch Llywarch
Gladys was born about 1098 in Arwystli, Montgomeryshire, Wales.