ABOUT NATHAN O'TOOLE
Best known for bringing to life Bjorn Lothbrok, the eldest son of Ragnar Lothbrok, in the hit History channel fictional series Vikings .
His first major acting role was playing Vincenzo in the Showtime series The Borgias in 2012.
In 2014, he made a guest appearance on Penny Dreadful .
He hails from Dunshaughlin, Ireland.
He played the younger counterpart to Alexander Ludwig 's elder version of Bjorn Lothbrok on Vikings.
