This translation of the Life of Fintán of Tech Munnu is part of a translation project of the so-called O'Donohue Lives from the Codex Salmanticensis. The project is dedicated to the memory of Richard Sharpe, the foremost student of these Lives, whose unpublished draft translations of a number of Lives facilitated the recent work undertaken by Eoghan Ahern, Sumner Braund, Meredith Cutrer, and Roy Flechner. We are grateful to Ingrid Sperber for generous expert advice. We thank the College of Arts and Humanities at UCD for seed funding that helped to set this project in motion.