A Borjigin is a member of the Mongol sub-clan that started with Bodonchar Munkhag of the Kiyat clan. Yesugei's descendants were thus said to be Kiyat-Borjigin. The senior Borjigids provided ruling princes for Mongolia and Inner Mongolia until the 20th century. The clan formed the ruling class among the Mongols and some other peoples of Central Asia and Eastern Europe. Today, the Borjigid are found in most of Mongolia, Inner Mongolia and Xinjiang, and genetic research has shown that descent from Genghis Khan and Timur is common throughout Central Asia and other regions.

The Khongirad, also known as Qongirat (Qoñğyrat/Қоңғырат), was one of the major divisions of the Mongol tribes. Variations on the name include Onggirat, Ongirat, Qongrat, Khungirat, Kungrad, Qunghrãt, Wangjila (王紀剌), Yongjilie (雍吉烈), Qungrat, and Guangjila (廣吉剌) in Chinese sources. Their homeland was located in the vicinity of Lake Hulun in Inner Mongolia and Khalkha River in Mongolia, where they maintained close ties with the ruling dynasties of northern China. Because the various Hongirad clans never united under a single leader, the tribe never rose to great military glory. Their greatest fame comes from being the primary consort clan of the ruling house of Genghis Khan's Mongol empire. Genghis Khan's mother (Hoelun), great grandmother, and first wife were all Khongirads, as were many subsequent Mongol Empress and princesses.