The earlier part of it has perished save a fragment Sogu-brot, and citations and paraphrases in Saxo, and the mythical Ragnar Lodbrok's and Gongu-Hrolf's Sagas; the latter part, Lives of Harold Bluetooth and the Kings down to Sveyn II., is still in existence and known as Skioldunga.
Later the name of Ragnar (probably Ragnar Lodbrog) appears, along with Weland, Hasting and one of the sons of Ragnar, Bjorn.
In Ireland, besides the important and successful Turgesius, we read of a Saxulf who early met his death, as well as of Ivar (Ingvar), famous also in England and called the son of Ragnar Lodbrog, and of Oisla, Ivar's comrade; finally (the vikings in Ireland being mostly of Norse descent) of the wellknown Olaf the White, who became king of all the Scandinavian settlements in Ireland.
In 870 Edmund, king of East Anglia, was killed by the Danes under I'varr and Ubbi, the sons of Ragnar Lol brok.
After the death of Ragnar LObrok's sons East Anglia was occupied by the Danish king Guthrum, who made a treaty with Alfred settling their respective boundaries, probably about 880.