Belgutei (1164-1256 AD), the fourth younger brother of Genghis Khan, was a Hercules who was good at wrestling, and Genghis Khan once said, "With the power of Belegutai, the shooting of Hasar, the reason why this decay takes the world."
Belegutai lived longer than his brothers in life and the number of children: they lived for almost 100 years (92 years); they had hundreds of wives; during this period they gave birth to 100 sons.
Its descendants are concentrated in the abaga banner (abaga Mongolian uncle meaning uncle, plural ababahanar uncles, also in Outer Mongolia), Ongniud banner (Ongniud, whereong is a Chinese foreign word, meaning "king", iud woodt is plural grid, meaning princes), these two banners have many belegutai descendants, because for the Yuan Emperor, from the relatives of the uncle, politically speaking, the kings, so the name.
Today, the descendants of Belegutai in the Mongolian ethnic group, if they give themselves a surname, most of the surnames are "Abaga" or "A" (abaga abbreviation), Wang (Weng Niu Te), Wang (Weng Niu Te), and the Outer Mongolia region is directly written as "A" or "Abg".
On the website of (a gene sequencing company), under C-Y4541, there are a large number of Mongolians with this surname, of which C-Y4541 downstream C-FGC16605, there are two descendants of Abaga Banner, all of whom are of this type, the time is 880 years old, very close to the year 1164 AD (before 858) when Belegutai was born.
In addition, the Y chromosome tree of a genetic company has a large number of Uyghurs in Xinjiang who are of the type under C-Y4541, and are suspected to be descendants of the king clan of the Eastern Chagatai Khan.