Cathal O'HallinActingShareCathal O'Hallin is known for his work on Vikings (2013), The Hole in the Ground (2019) and Desmond (2016).Known forAdd8.1Vikings2013 · Series · HvitserkAddDesmond2016 · NathanYearPopularTop ratedAll acting creditsAddDesmond2016 · NathanAdd8.1Vikings2013 · Series · Hvitserk
