 Later in the "Heimskringla" (the "Saga of Olaf Haraldsson"), Snorri writes that king Olaf Haraldsson was captured by the Swedes in Mälaren and had to dig a channel at Agnafit to escape into the Baltic Sea.Snorri attributes the name to king Agne and "fit" ("wet meadow"), but toponymists have suggested that "Agne"- can be derived from the practice of baiting fishing tools at the location.The location is also mentioned in "Ásmundar saga kappabana" and in "Orvar-Odd's saga".