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

 Tangwystl verch Llywarch
Tangwystl verch was born in 1168 in Rhos, Denbighshire, Wales.

 Gwladys verch Llewellyn
Gwladys verch was born about 1205 in <, , Caernarvonshire, Wales>.¹   She died in 1251 in , Windsor, Berkshire, England.¹ 

 Gruffydd ap Llewelyn