 He acted as an official representative for the English Royal Family in the Perfeddwlad territories . Tudur used the English property laws , which he found more advantageous in his position than those used by the Welsh as they allowed for inheritance of lands by a single party . He continued to hold the lands in North Wales and Cardiganshire which he had inherited . Upon his death in 1311 , his holdings passed into the hands of his son Goronwy ap Tudur Hen . He had two further sons , Madog and Hywel . Tudur Hen was take for internment to Bangor priory on 11 October 1311 ; his son , Goronwy , was also placed there on 11 December 1331 following his death . 
