Yes you are correct, Sweden is called Ruotsi. a Swede is called ruotsalainen, but there was a term Varakko-Ruotsit also in olden days I believe. Ruotsi means in Finnish, literally, rower. Old Finnish yes (since no-one thinks the meaning that way anymore) but Finnish nevertheless.  Yes. Ruotsi mean country and ruotsi is language, but in old times word ruotsi referred to single swede when plural was ruotsit. Karelians in Russia calls  Finns  as ruotsit still today.      The Varangian Rus, which comes to mind of the Varangians has also a curious connection: modern Finnish: Varikko (arms depot) Vartio (armed watchplace/ watchswift). Finnish word 'vartio' propably comes from Swedish, but word 'varikko' is originated from word 'vara' which means 'wealth' or 'something to spare'. So when Finnish 'town' is 'kaupunki' (trade + nki), would 'varanki' mean 'wealth + nki'. Other words: there are wealth enough to keep garrison. Modern word is 'varuskunta' for garrison. But most likely international word 'varangian' or the older form 'varjag' comes from germanic word which means 'alliance'/'oath'.     I would not think it would be totally unbelievable if Finns had participated the foreign adventures of Svea. Most likely these trade companies have been pan-nordic in this sense. Afterall those areas were habited by fennic peoples when slavic tribes had only few town. So there was genuine need for Finn who can talk with locals and knows the rivers and lands. Like indian guide in America :D       There may be some connection with Finnish word Moska and Moscow too... ;) This is fact, no 'may'. But Moscows name doesn't come from Finns but older fennic peoples lived that area: muroms and meryas.