Rhys ap Gruffydd
From Ednyfed's many sons would come a 'ministerial aristocracy' in northern Wales. He left the manors of Trecastell, Penmynydd and Erddreiniogin, Anglesey to those of his sons born to his second marriage to Gwenllian, daughter of king Rhys ap Gruffydd of Deheubarth; among these sons was Goronwy (died 1268), founder of the line of the Tudors of Penmynyth.