King Merfyn ap Rhodri Mawr
Merfyn was born about 0859 in Caer Seiont, Carnarvonshire, Wales.  He died in 0900.

 Tryffin ap Merfyn
Tryffin was born about 0879.

 Llewelyn ap Mervyn
Llewelyn was born about 0880 in Llandeilo, Carmarthenshire, Wales.