Chechen language
Chechen ( , ) is a Northeast Caucasian language spoken by more than 1.4 million people, mostly in the Chechen Republic and by members of the Chechen diaspora throughout Russia, Jordan, Central Asia (mainly Kazakhstan and Kyrgyzstan), and Georgia.
Itelmens
Native peoples of Kamchatka (Itelmen, Ainu, Koryaks and Chuvans), collectively referred to as Kamchadals, had a substantial hunter-gatherer and fishing society with up to fifty thousand natives inhabiting the peninsula before they were decimated by the Cossack conquest in the 18th century. So much intermarriage took place between the natives and the Cossacks that "Kamchadal" now refers to the majority mixed population, while the term "Itelmens" became reserved for persistent speakers of the Itelmen language. By 1993, there were less than 100 elderly speakers of the language left, but some 2,400 people considered themselves ethnic Itelmen in the 1989 census. By 2002, this number had risen to 3,180, and there are attempts at reviving the language. According to the 2010 census, there were 3,193 Itelmen in Russia.