The Tocharians or Tokharians (/təˈkɛəriənz/ or /təˈkɑːriənz/) were Indo-European peoples who inhabited the medieval oasis city-states on the northern edge of the Tarim Basin (modern Xinjiang, China) in ancient times. Their Tocharian languages, a branch of the Indo-European family, are known from manuscripts from the 6th to 8th centuries AD, after which they were supplanted by the Turkic language of the Uyghur Kingdom of Qocho which invaded Tarim Basin. These people were called "Tocharian" by late-19th century scholars who identified them with the Tókharoi described by ancient Greek sources as inhabiting Bactria. Although this identification is now generally considered mistaken, the name has become customary.