Owen Gwynedd , Prince Of Wales
Owen was born about 1087.

 Gwladys Verch Llywarch
Gwladys was born in 1098.

 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.