Iefan ab Owain Gwynedd

Owain ap Gruffudd or Owain Gwynedd was King of Gwynedd from 1137 until his death in 1170, succeeding his father Gruffudd ap Cynan. He is known as Owain Gwynedd to distinguish him from the contemporary Powysian ruler, Owain Cyfeiliog, whose name was also Owain ap Gruffudd. Owain Gwynedd was the first recorded Welsh ruler to style himself king of Wales and Prince of the Welsh.