The Astonishing Stories Behind Some Of History’s Most Famous Vikings, From Erik The Red To Ivar The Boneless

Published November 16, 2025
Updated November 28, 2025

Björn Ironside, The Brave Hero Of Scandinavian Legend

Bjorn Ironside Famous Vikings

History ChannelActor Alexaner Ludwig portrays Björn Ironside in the show Vikings.

Although he is remembered as one of the most celebrated warriors in Viking history, separating legends about Björn Ironside from reality is difficult.

In Scandinavian legend, Ironside was the son of Viking chieftain Ragnar Lothbrok, and was known for leading successful raids across Europe in the ninth century before becoming a ruler of Sweden and Norway and founding the royal Munsö Dynasty. He is most often described as a powerful and fearsome warrior with sides like iron, as his name suggests, and was known for expeditions he and his brothers — Ivar the Boneless, Hvitserk, and Sigurd Snake-in-the-Eye — embarked upon during their lives.

The earliest mentions of Ironside appear in the Annales Bertiniani and Chronicon Fontanellense, which reference a Viking chieftain named “Berno” who emerged as a formidable force in West Francia during the mid-ninth century.

In 856, Berno and another Viking leader named Sigtrygg sailed up the Seine River launching raids, and their combined forces faced King Charles the Bald south of Paris. Berno established a stronghold on the island of Oissel near Rouen and launched a significant assault on Paris around 856 or 857.

Ragnar Lothbroks Sons With King Aellas Messengers

Public DomainThe sons of Ragnar Lothbrok meeting with King Ælla’s messengers.

The 13th-century Gesta Danorum by Saxo Grammaticus provides more detail. According to this text, during combat between Ragnar Lothbrok and Swedish ruler Sörle, Björn Ironside inflicted great slaughter without injury to himself, gaining his name “Ironsides.” Ragnar presented Ironside with the lordship of Sweden for his bravery and later appointed him leader of Norway as well.

After Ragnar’s death in 865 at the hands of King Ælla of England, Ironside and his brothers launched an assault to avenge his murder, capturing Ælla and killing him using the blood eagle torture method.

Most of Ironside’s exploits were shared in The Saga of Ragnar Lothbrok and The Tale of Ragnar’s Sons, which chronicles the lives of Björn and his brothers after their father’s death. However, these sagas are widely believed to be fictitious based on various warriors from the ninth century, making the truth of Björn Ironside one of history’s elusive mysteries.

author
Austin Harvey
author
A staff writer for All That's Interesting since 2022, Austin Harvey has also had work published with Discover Magazine, Giddy, and Lucid, covering topics including history, and sociology. He has published more than 1,000 pieces, largely covering modern history and archaeology. He is a co-host of the History Uncovered podcast as well as a co-host and founder of the Conspiracy Realists podcast. He holds a Bachelor's degree from Point Park University. He is based in Pittsburgh, Pennsylvania.
editor
Kaleena Fraga
editor
A senior staff writer for All That's Interesting since 2021 and co-host of the History Uncovered Podcast, Kaleena Fraga graduated with a dual degree in American History and French Language and Literature from Oberlin College. She previously ran the presidential history blog History First, and has had work published in The Washington Post, Gastro Obscura, and elsewhere. She has published more than 1,200 pieces on topics including history and archaeology. She is based in Brooklyn, New York.
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Harvey, Austin. "The Astonishing Stories Behind Some Of History’s Most Famous Vikings, From Erik The Red To Ivar The Boneless." AllThatsInteresting.com, November 16, 2025, https://allthatsinteresting.com/famous-vikings. Accessed November 29, 2025.