Gruffydd ap Cynan

Gruffydd was born in 1055 in Dublin.  Gruffydd's father was Cynan ap Lago and his mother was Ranult (Ragnhildir) Olaf of Dublin ingen.  He was an only child.  He died at the age of 82 in 1137.  He was buried in Bangor Cathedral.

They had two sons named Owaine Gwynedd and Caradoc.