The Bisermän are a group of Udmurt people. There were 100,000 Bisermän in 1926, but they weren't counted later. They live in the Yukamen , Glazov , Balezino and Yar Districts of Udmurtia. There are 10 villages with pure Bisermän and 41 villages with a mixed Bisermän population in Russia.
They speak a Tatar-ified dialect of the Udmurt language. They migrated to the banks of the Cheptsa river (a tributary of the Vyatka) at the time of the Kazan Khanate. Their ancestors were the Finno-Ugric tribes of Volga Bulgaria, partly Tatar-ified and converted to Islam. After the conquest of Kazan in 1552 they were converted to Christianity by Ivan Grozny.
