Owen I Gwyned , Prince of North Wales
Owen I Gwyned , Prince was born about 1100.  He died in 1170.

 Gladys of North Wales

 Iorworth Dywyndwn Ap Owain Gwynedd
Iorworth Dywyndwn Ap Owain was born in 1136 in Aberffraw Castle, Anglesey, North Wales.  He died at the age of 38 in 1174 in Pennant Mehangell.