Claim: Mahakörgis Khan was given the title Ükegtü, they fought Tümeds and defeated Oirads who are part of Mongols.
Evidence: Mahakörgis or Markörgis (Mongolian: Махагүргис хаан, Mongolian Language: ᠮᠠᠬᠠᠺᠥᠷᠭᠢᠰ ᠬᠠᠭᠠᠨ ; Chinese: 馬兒古兒吉思; 1448–1465) was a Mongol Khan of the Northern Yuan dynasty based in the Mongolian Plateau. Mahakörgis was given the title Ükegtü because he sat inside a cart during the battles. After that Samar taifu and Dogholon taishi of the seven Tümeds crowned the boy Khagan. The Tumeds reached their peak under the rule of Altan Khan (1507–1582) in the mid-16th century. They raided the Ming dynasty and attacked the Four Oirats. They defeated the Oirads and returned with plundered goods. Oirats (Mongolian: Ойрад, Oirad, Mongolian pronunciation: [ɔiˈrɑt or Ойрд, Oird; Kalmyk: Өөрд; in the past, also Eleuths) are the westernmost group of the Mongols whose ancestral home is in the Altai region of Siberia, Xinjiang and Western Mongolia.