Bleddyn "Sais" ap Cynfyn , Prince of Powys

Bleddyn "Sais" ap was born about 1025 in Powis, Montgomeryshire, Wales.  Bleddyn "Sais" ap's father was Cynfyn ap Gwerystan and his mother was Angharad verch Maredudd. He had a brother and two sisters, named Rhiwallon ap, Miss verch and Iwerydd verch.  He was the second youngest of the four children. He had a half-brother named Gruffudd ap.  He died in 1075.

‌Bleddyn "Sais" ap and Miss verch were married in a religious ceremony before 1058 in 2nd wife.  They had two daughters named Efa verch and Hunydd verch.

‌Bleddyn "Sais" ap and Haer verch were married in a religious ceremony in 1st wife.  They had two sons named Maredudd ap and Cadwgon ap.