Rhys ap Gruffydd
Rhys Mechyll (died 1244) was a Welsh prince of the House of Dinefwr, ruler of part of the kingdom of Deheubarth in southern Wales from 1234 to 1244. He was a son of Rhys Gryg (died 1234) ("Rhys the Hoarse"), son of Rhys ap Gruffydd (1132–1197), "The Lord Rhys", ruler of the kingdom of Deheubarth.