RHYWALLON de POWYS & UNKNOWN MISS 
They had two daughters named GLADYS verch and SIONET verch RHYWALLON.
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Personal Details
RHYWALLON de POWYS
RHYWALLON was born about 1025 in Powys, Wales.1 He died in 1070 in Slain. Mechain, Montgomeryshire, Wales.1
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