About Nathan O'Toole
Nathan O'Toole’s other television credits include Vicenzo in The Borgias; Ernest in Penny Dreadful; Alan in The Dry.
Selected screen credits
The BorgiasVicenzo · 2012
Penny DreadfulErnest · 2014
The DryAlan · 2024
Nathan O'Toole in Vikings
The portrayal
Bjorn Ironside
Nathan O'Toole portrays Bjorn Ironside in Vikings.
Bjorn begins as Ragnar and Lagertha’s son, watching adult power from the edge of the hall. His development turns the inheritance of a famous name into a practical burden.
Follow the character’s journey, loyalties and place in the wider saga.
Explore Bjorn Ironside’s storyNathan O'Toole: portrait & roles
