Merfyn ap Rhodri   

Merfyn was born about 0859.1 Merfyn's father was Rhodri (Mawr, The Great) ap Merfyn and his mother was Angharad verch Meurig. His paternal grandparents were Merfyn (The Freckled) Frych ap Gwriad and Nest verch Cadell; his maternal grandparents were Meurig ap Dyfnwallon and <Unknown>. He had eight brothers and two sisters, named Anarawd, Cadell, Aeddan, Tudwal, Meurig, Rhodri, Gwriad, Gwyddelig, Nest and Angharad. He was the second oldest of the eleven children. He died in 0901.2

Children

 Llywelyn ap Merfyn

Llywelyn was born about 0880 in Llandeilo, Carmarthenshire, Wales.2

 Tryffin ap Merfyn

Tryffin was born about 0887.3

 Iarddur ap Merfyn

Iarddur was born about 0889.3

 Afandreg verch Merfyn

Afandreg was born about 0891.3

-------------------- Merfyn ap Rhodri Mawr had the following children:

Llewelyn ap Mervyn Triffyn ap Mervyn Yarthyr ap Mervyn Avandreg

From: http://www.robertsewell.ca/powys.html