Vikings' season 5B: Is Magnus really the son of Ragnar Lothbrok?

There isn't any proof Magnus is the son of Ragnar Lothbrok and a quick look up of historical facts reveals there was no Magnus in Ragnar's nor Queen Kwenthrith's legacy

Bjorn/Spoilers, Vikings Wiki

Ragnar Shaggy-Trousers and Eystein Foul-Fart: the truth behind

Vikings' season 5 episode 13: Bjorn meets an unlikely ally

Vikings' Season 4, Episode 17 Review: 'The Great Army

Magnus of Vikings history channel

Why does Bjorn have a different mother on Vikings than what is

Vikings' Season 4: Ragnar's Sons – The Hollywood Reporter

Vikings' Season 5: Ragnar's Son, Magnus, Shows Up In The Cast List

Vikings: Why Magnus Was Sent Away By Aethelwulf

Vikings Season 5 will explore how Ragnar's sons became more

Vikings' season 5 finale review: A mother's wrath was the silver

Magnus, Vikings Wiki

Magnus of Vikings history channel