Muromian language
Muromian is an extinct Uralic language formerly spoken by the Muromian tribe, in what is today the Murom region in Russia. They are mentioned by Jordanes as Mordens and in the Primary Chronicle. Very little is known about the language, but it was probably either closely related to the Mordvinic languages, or a language closely related to Meryan. Muromian probably became extinct in the Middle Ages around the 10th century, as the Muromians were assimilated by the Slavs. The Muromian language is unattested, but is assumed to have been Uralic, and has frequently been placed in the Volga-Finnic category.