Iorwerth "Drwyndwn" ap Owain Prince of North Wales

   Another name for Iorwerth was Iorwerth "Broken Nosed" Prince of Gwynedd.

  General Notes:

Weis' "Ancestral Roots. . ." (176:6). Iowerth was his father's heir, but his nickname seems to suggest that he suffered from some disability which apparently disqualified him, at least in the eyes of some, for the kingship. As a result when his father died in 1170, Gwynedd was divided between several of his descendants.
King HENRY II of England recognized Iowerth's half brother, Dafydd as king. By about 1194, however, division was so rife in all of Wales, including Gwynedd, that Dafydd was actually able to exercise control only over an area known as the Perfeddwlad. This set the scene for the arrival on the scene of the man who again unite the Welsh - LLYWELYN THE GREAT, Iowerth's son. ¹¹⁶

Iorwerth married Margred verch Madog, daughter of Madog ap Maredydd King of Powys and Susanna verch Gruffyd of Gwynedd, about 1163. (Margred verch Madog was born about 1129 in Montgomeryshire, Wales.)