 It was also, according to Snorri Sturluson, the abode of Haakon's wife Thora.Finally, the description of Lagertha coming to Ragnar's aid with flying hair is similar to how the "Flateyjarbók" describes Thorgerd and her sister Irpa assisting Haakon.Christen Pram's historical drama "Lagertha" (1789) is based on Saxo's account.