Rhychwin Farfog Ap Helig was born about 0590. Rhychwin Farfog Ap Helig's father was Helig Foel Ap Glannog. His paternal grandfather was Glannog Ap Gwygon Gleddyfrudd. He had a brother named Gwrydr Goch Ap Helig. He was the older of the two children. Rhychwin Farfog Ap Helig is no longer alive.