Cynfyn was born before 1220 in Wales, the son of unknown parents.
His wife is not known. They were married, but the date and place have not been found. Their only known child was Bleddyn (<1240-?).
!Source: Morris, Joseph, "Benyon of Great Ash, &c." in "Geoneological Manuscripts connected with the County of Salop and Principality of Wales", Vol. 9, Page 4641, mss. no. 4085. LDS tape# 0504680. Most entries copied in their entirity.