Rhiwallon Ap Cynfyn
Rhiwallon was born in 1026 in Powys, Wales.¹   He died at the age of 44 in 1070 in Battle Of Mechain, Montgomeryshire, Wales.¹ 

 Sionet Ferch Rhiwallon
Sionet was born in 1040.  Sionet is no longer alive.

 Gwladys Ferch Rhiwallon
Gwladys was born in 1045 in Powys, Wales.¹   Gwladys is no longer alive.