Owain Cyfeiliog ap Gruffydd Prince of Powys & Gwenllian verch Owain Gwynedd Princess of North Wales 
Owain Cyfeiliog ap and Gwenllian verch Owain were married. They had two sons and three daughters, named Cadwallon ap, Gwenwynwyn ap, Gwenllian verch, Gwerful verch and Meddefus verch.
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Personal Details
Owain Cyfeiliog ap Gruffydd Prince of Powys
Owain Cyfeiliog ap was born in 1125 in Powys, Montgomeryshire, Wales. He died at the age of 72 in 1197 in Monastery Of Strata Marcella.1
Gwenllian verch Owain Gwynedd Princess of North Wales
Gwenllian verch Owain was born in 1125 in Caernarvonshire, Wales. Gwenllian verch Owain is no longer alive.
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Children
Gwenwynwyn ap Owain Prince of Lower Powys
Gwenwynwyn ap was born in 1165.1 He died at the age of 51 in 1216.1