Owain Cyfeiliog ap Gruffudd
Owain Cyfeiliog ap was born about 1125 in Wales.

 Gwenllian verch Owain
Gwenllian verch was born about 1129 in Aberffraw Castle, Caenarvonshire, Wales.

 Gwenwynwyn ap Owain
Gwenwynwyn ap was born about 1165 in Powys, Wales.  He died in 1220.