bk&q p 740 [VB1] "The kingdom of Norway had its roots in the Swedish colony of Vermeland, settled in about the year 680 by Olaf Tratelia who had been expelled from Sweden. He overthrew the petty local rulers and established the core of what became the Viking kingdom of Norway."
WHWC shows an Olaf ruling Norway from 630 to 640, succeeded by Halfdan I.