[6][7][8] In the 13th century during his travel to Mongolia, papal envoy Plano Carpini claimed that the Besermyan were subjects of the Mongols.

[10] Some Besermyan traditions differ from other Udmurtian customs due to the Islamic influence during the Volga Bulgaria and Khanate of Kazan periods.

According to this indicator, the Besermyans genetically stand out against the background of the Volga-Ural region and are closer to the Turkic-speaking peoples of Southern Siberia.

It turned out that more than half of the samples belong to haplogroup N, which may indicate the predominance of the Finno-Ugric component in the formation of the Besermyans along their male line.

[citation needed] The data from lexicostatistics also did not reveal a noticeable Bulgar (Old Chuvash) substrate in the Besermyan dialect.