Griffith, the son of Iestyn, who had the Lordship of Coetty, by settlement, under the condition of paying a gold noble annually to his brother Caradog, who was made Lord of Glamorgan by his father. 1
Marriage Information:
The name of Gruffydd's wife is not known.
Sources
1 See notes under Gruffydd's father, Iestyn ap Gwrgan.