Georgia Hirst – Torvi
Georgia Hirst is actually the younger sister of Maude Hirst, who played Helga on the show. She’s best known for her role on Vikings, which by the way, was her first break out role! She’s most recently done some work on the film Ravers.
Other than that, the actress hasn’t appeared much in major films or shows.
Ida Nielsen - Margrethe
Ida Nielsen is a Danish actress that is best known for her role on Vikings.
Although, before the show, she also appeared on A Viking Saga: Son of Thor, her first film, and Anna Pihl.
Georgia Hirst - Torvi
Torvi is a Shield-maiden, princess, and the ex-wife of Jari Borg. After her husband’s death, Torvi ends up marrying the abusive Erlendur.
Erlendur is also eventually murdered by Torvi herself and runs away to live in Kattegat with Bjorn, the firstborn son of Ragnar.
Clive Standen – Rollo
Rollo Sigurdsson is Ragnar Lothbrok’s older brother and Duke of Normandy. He is also the father of William Marcellus, and Celsa, and husband of princess Gisla.
Rollo earned the reputation of being the fearsome Viking warrior who had an impulsive streak with internal struggles. Though Rollo has his signature long hair, the actor behind the role actually doesn’t sport such a look.
Clive Standen – Rollo
Clive Standen is a British actor, best known for his astounding number of television roles that include Bryan Mills in the NBC series Taken, Sir Gawain in the series Camelot, Archer in the BBC series Robin Hood and Private Carl Harris in the sci-fi show Doctor Who.
Also, of course, Rollo in Vikings.