Iorwerth Drwyndwn Ap Owain Gwynedd
Iorwerth Drwyndwn Ap Owain was born about 1130 in Gwynned, , Wales.  He died about 1184.

 Margaret Ferch Madog
Margaret Ferch was born about 1129 in Overton-Madog, Flintshire, Wales.

 Llewellyn Ap Iorwerth
Llewellyn Ap was born about 1173 in Aberffraw Castle, Anglesey, Wales.  He died on April 11th, 1240 in Aberconway, Caernarvonshire, Wales.