Which real-life historical figures served as inspiration for the characters in the Viking TV series?

The popular historical drama TV series 'Vikings' on the History Channel is loosely based on the legendary Norse heroes and explores their way of life and adventures. The characters in the series are a mix of fictional and historical figures, and many of them have been inspired by real-life people. The showrunners and writers of the series have done extensive research and studied various historical sources to create a realistic portrayal of the Viking Age.

One of the most prominent characters in the series, Ragnar Lothbrok, is based on the legendary Viking warrior and ruler, Ragnar Lodbrok, who lived during the 9th century. Other historical figures who have inspired characters in the series include his sons Ivar the Boneless, Bjorn Ironside, and Sigurd Snake-in-the-Eye, as well as the legendary shieldmaiden Lagertha.

In addition to the main characters, many minor characters in the series have also been inspired by real-life people. For instance, Athelstan, the monk who becomes Ragnar's close friend and advisor, was inspired by the Anglo-Saxon monk Æthelstan of Abingdon. The historical figures such as King Harald Finehair, Queen Aslaug, and Bishop Heahmund have also been included in the series to provide a more accurate portrayal of the Viking Age.