Björn

"I have changed my mind."

- Björn to Ragnar in decision of going with his Mother instead

Björn is the eldest son of Lagertha and Ragnar Lothbrok. Björn shares his fathers thirst for adventure and glory in the world, he also wishes to explore the faraway lands. He is the nephew of Rollo and the older brother of Gyda and his half brothers Ubbe and Hvitserk.

Season 1
Björn is trained how to fight with sword and shield by his father Ragnar, being 12 years old he is old enough to receive his arm-ring from the Earl of Kattegat. Ragnar takes Björn on a journey to the town to receive his arm-ring making him a man by law. Ragnar asks Björn what it is a man does. Björn directly tells Ragnar "He fights. [and] He protects his family." Arriving at Kattegat Björn drinks with his uncle Rollo and his father Ragnar. Björn witnesses how the Earl deals with criminal offenses, he watches the execution of Eric. Ragnar lectures Björn on how Eric is smiling so he can die well without fear and enter Valhalla. Rollo tells Björn he must watch for Eric's sake. Later that night Björn recieves his arm-ring from Haraldson, swearing his fealty. Björn accompanies Ragnar to visit Ragnar's close friend Floki. Floki notices that Björn has Ragnar's eyes and says that he will want to be better than Ragnar.