Lipka Tatars
According to some estimates, by 1590–1591 there were about 200,000 Lipka Tatars living in the Polish–Lithuanian Commonwealth and about 400 mosques serving them. According to the "Risāle-yi Tatar-i Leh" (trans: "Message Concerning the Tatars of Poland", an account of the Lipka Tatars written for Suleiman the Magnificent by an anonymous Polish Muslim during a stay in Constantinople in 1557–1558 on his way to Mecca) there were 100 Lipka Tatar settlements with mosques in Poland. The largest communities existed in the cities of Lida, Navahrudak and Iwye. There was a Lipka Tatar settlement in Vilnius, known as Totorių Lukiškės, Tatar quarter in Trakai and in Minsk, today's capital of Belarus, known as Tatarskaya Slabada.