The Erzya language, also Erzian or historically Arisa, is spoken by approximately 300,000 people in the northern, eastern and north-western parts of the Republic of Mordovia and adjacent regions of Nizhny Novgorod, Chuvashia, Penza, Samara, Saratov, Orenburg, Ulyanovsk, Tatarstan and Bashkortostan in Russia. Wikipedia