Lochlann Ó MearáinLochlann Ó Mearáin is an Irish actor known for playing Rohan in the series Mystic Knights of Tir Na Nog.Movies (6)King Arthur (2004)Pilgrimage (2017)Joyride (2022)Love & Friendship (2016)Holy Water (2009)Rosie (2019)TV (4)The Head (2020)Smother (2021)The Mystic Knights of Tir Na Nog (1998)Small Town, Big Story (2025)Genres Lochlann Ó Mearáin works incomedydramahistoricalmedievalactiondramaMore about Lochlann Ó MearáinWikipedia