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

 Margaret Ferch Madog
Margaret Ferch was born about 1129 in Overton-Madoc,Flintshire,Wales.  She died about 1200.

 ap Iorwerth Llewelyn
ap Iorwerth was born in 1173 in Caernarvonshire,Wales.  He died at the age of 67 on April 11th, 1240 in Aberconwy,Arllechwedd Isaf,Caernarvonshire,Wales.