 If true, he would have likely been born somewhere near the end of the 4th century and evangelizing in the 5th, and some writers accept this (Plummer, Hogan, Kenny).According to W. O'Halloran, the Annals of Inisfallen have Ciarán born at Cape Clear in Cork in 352.Others such as Baring-Gould, Sharpe, O'Riain, and Sperber push his life forward variously into the 5th and even 6th centuries.