Llywarch ap Cynhaethwy

Llywarch ap was born about 1100 in Wales.  Llywarch ap's father was Cynhaethwy ap Gwrwared.  His paternal grandfather was Gwrwared ap Seisyll. He had a brother named Cynhaethwy ap.  He was the older of the two children.  Llywarch ap is no longer alive.

He had a biological son named Einion ap.