King Llewfer Mawr of Britian

King Llewfer Mawr was born about 0120.  King Llewfer Mawr's father was Colius "Old King Cole" of Britian and his mother was daughter of Cyllin Ap Caradoc.  His maternal grandfather was Cyllin Ap Caradoc.  He was an only child.

They had a daughter named Gladys verch.