Iwerydd verch Cynfyn

Iwerydd verch was born about 1024 in Powys, Wales.  Iwerydd verch's father was Cynfyn ap Gwerystan and her mother was Angharad verch Maredudd. She had two brothers and a sister, named Bleddyn "Sais" ap, Rhiwallon ap and Miss verch.  She was the second oldest of the four children. She had a half-brother named Gruffudd ap.

They had two sons named Owain ap and Uchdrud ap.