Finnish Crusades: _hot_

This was the real war. Sweden and Novgorod had been competing for control of Karelia (eastern Finland) and the lucrative fur trade routes. In 1293, Marshal Torkel Knutsson led a large Swedish force across the frozen Gulf of Finland. He stormed the Novgorodian outpost at Ladoga, but more decisively, he built a formidable stone castle at Vyborg (Viipuri).

Vyborg became the eastern sword-point of the Swedish kingdom. The campaign of 1293, explicitly called a crusade by papal bulls issued to justify it, was a brutal frontier war. The Swedish army fought Novgorodians and their Karelian allies, baptizing captured Karelians by force. The conflict was not resolved until the Treaty of Nöteborg (1323), which formally divided Finland and Karelia between the two powers. The border drawn then would separate Western and Eastern Christianity—and later, Sweden and Russia—for over six centuries. finnish crusades

It’s a powerful national epic. However, no Swedish or papal source from the 12th century mentions such an expedition. The first written account appears in the late 13th century, likely to justify Sweden’s existing dominion. The truth is probably more mundane: a gradual missionary effort from Sweden, led by figures like Bishop Henry, who likely died in Finland around 1158. The "crusade" was a later, political retcon. This was the real war