Ragnar Lothbrok (Travis Fimmel) is already dead and Lagertha (Katheryn Winnick) is the one who rules Kategatt in "Vikings" Season 4. In the latest episode of the season, the sons of Ragnar are one to take on their revenge on their father's death.
Bjorn (Alexander Ludwig) is back in Kateggat for "Vikings" Season 4. It is also speculated that Ivar (Alex Hogh Andersen) may be the one to kill Lagertha (Katheryn Winnick) in the upcoming episodes.
Lagertha Lothbrok (Katheryn Winnick) has conquered Kategatt and is now the head of the place in "Vikings" Season 4 Episode 16. She still cannot believe that Ragnar (Travis Fimmel) is dead.
