Göta älv
But according to the "Hversu Noregr byggðist", Álf, also called Finnálf, was a son of King Raum who inherited from his father the land from the Gaut Elf river (the modern Göta älv river) north to the Raum Elf river (the modern Glomma river), and that the land was then called Álfheim.