When looking at the story of Lagertha in the medieval stories, I've been looking for theories as to why norse society would have invented stories like those about Lagertha involving women in combat when they seemingly would not have allowed women in combat in real life. I'm focusing on the Lafertha stories because, to the best of my knowledge, this story does not have Lagertha become a warrior due to a lack of men or anything that indicated that the society that created that story disapproved of what the character did in these stories. Can anyone provide scholarly theories as to why old Norse society would create stories about figures like Lagertha?