So in our timeline there were three 'viking kingdoms', which were Norway, Denmark and Sweden. They weren't really kingdoms at that point, but that's not important now. In my own timeline I have Frisia and Saxony (kinda) acting as another two viking kingdoms. Which got me wondering if there were any other regions that could have joined in. Specifically if there were any other pagans in Northern Europe that could have been making naval raids and conquests on the Christians and eventually settling in those areas? Could the Pomeranians have done it? Is there any possible timeline where Sami vikings ply the waves?