I get your point, but there was much interaction between the swedish vikings and the Finnish peoples. Besides, loan words through trade is common, as well as political terms if an area has been colonized (and I believe there were some viking settlements in Finland). Consider only of how much of the English language comes from norse words, latin or french.

I can definitely imagine that a hov for worship becomes an important gathering place for settlers or colonialists, and as such, that big men or kings would base their power from there, perhaps leading to some development of the word into being related to courts. I don't know. My knowledge of how etymology works comes from youtube channels and amateur word studies in Biblical Hebrew and Greek. :P

But the contact between vikings and baltic lands, Finland etc. is often overlooked.