Prince Llewelyn Fawr ("the Great") ap Iowerth of Wales
Llewelyn Fawr, known as "the Great", was born in 1173 in Dolwyddelan, Nantoconwy.  He died at the age of 67 on April 11th, 1240 in Aberconwy Abbey, Arllechwedd Isaf, Caernarvonshire, Wales.

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

 Prince Gruffudd ap Llewelyn of Gwynedd
Gruffudd was born about 1206 in Gwynedd, Caernarvonshire, Wales.  He died  due to fell from the Tower of London in Tower of London, Middlesex, England .