Ślesin [ˈɕlɛɕin] (Yiddish: שלעשין or Shleshin, German: Schlüsselsee from 1943-1945) is a town in Konin County, Greater Poland Voivodeship, in central Poland, with 3,324 inhabitants (2004). The oldest known mention of Ślesin comes from a document of Polish monarch Konrad I of Masovia from 1231. It was granted town rights in 1358 by King Casimir III the Great. It was a private church town, administratively located in the Konin County in the Kalisz Voivodeship in the Greater Poland Province of the Kingdom of Poland. More information...
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