The name Dzungar people, also written as Zunghar (literally züüngar, from the Mongolian for "left hand"), referred to the several Oirat tribes who formed and maintained the Dzungar Khanate in the 17th and 18th centuries. Historically they were one of major tribes of the Four Oirat confederation. They were also known as the Eleuths or Ööled. In 2010, 15,520 people claimed "Ööled" ancestry in Mongolia. An unknown number also live in China, Russia, and Kazakhstan. According to oral history, the Oöled and Dörbed tribes are the successor tribes to the Naiman, a Mongol tribe that roamed the steppes of Central Asia during the era of Genghis Khan. The Oöled shared the clan name Choros with the Dörvöd. "Zuun gar" (left hand) and "Baruun gar" (right hand) formed the Oirat's military and administrative organization.