I think the Scandinavian link can be traced back at the earliest to Snorri Sturluson (1179 - September 23, 1241). He wrote the prose Edda (which included Gylfaginning) over two hundred years after Iceland became Christianized around 1000 AD. This link will lead to some churches which were built around that time, look out for the dragon heads. http://www.medsca.org/stav_borgund.html I think in academic circles Jætterne is translated as Jotuns or Jötunn of Utgar; Jötunnheim were the race of giants, separated into categories such as frost and storm giants. . .