Cathal O'HallinActingCathal O'Hallin is known for his work on Vikings (2013), The Hole in the Ground (2019) and Desmond (2016).Known forIMDb0.0VikingsTV show · 2013IMDb0.0DesmondMovie · 2016Credits2AllMoviesTV showsAll departments▼2016DesmondMovieas Nathan2013VikingsTV showas Hvitserk · 13 episodes
