The Orthodox Izhorians, along with the Votes, are the indigenous people of historical Ingria. With the consolidation of the Kievan Rus and the expansion of the Republic of Novgorod north, the indigenous Ingrians became Greek Orthodox. Ingria became a province of Sweden in the Treaty of Stolbovo in 1617 that ended the Ingrian War, fought between Sweden and Russia. After the Swedish conquest of the area in 1617 the Ingrian Finns, descendants of 17th-century Lutheran emigrants from present-day Finland, became the majority in Ingria. In 1710, following a Russian conquest, Ingria was designated as the Province of St. Petersburg. In the Treaty of Nystad (1721), Sweden formally ceded Ingria to Russia. In 1927 the Soviet authorities designated the area as Leningrad Province. Deportations of the Ingrian Finns started in late 1920s, and Russification was nearly complete by the 1940s. , Ingria forms the northwestern anchor of Russia—its "window" on the Baltic Sea—with Saint Petersburg as its centre.