Rhiwallon ap Cynfyn
Rhiwallon was born in 1025 in Powys, Montogeryshire, Wales.  He died at the age of 45 in 1070 in Battle Mechain, Montgomery shire, Wales.

 Gwladus verch Rhiwallon
Gwladus was born in 1041 in Powys, Wales.  Gwladus is no longer alive.