Owain Cyfeilioc ap Gruffydd
Owain Cyfeilioc ap was born about 1117 in Montgomeryshire, Walers.  He died in 1197 in Montgomeryshire, Walers.

 Gwenllian verch Owain Gwynedd
Gwenllian verch Owain was born about 1124 in Caenarvonshire, Wales.

 Gwenwynwyn ap Owain Cyfeilioc
Gwenwynwyn ap Owain was born about 1151 in Montgomeryshire, Walers.  He died in 1216 in England.