Fang Xuanling
Fang Xuanling, in "Jinshu", (Ch. 110) states that around 349-370 CE the Xiongnu leader, titled Chanyu, Hèlàitóu (賀賴頭) (lit. "Alat head") brought his tribe of 35 thousand to the Xianbei Former Yan state and submitted to its emperor Murong Jun. Helaitou was bestowed a title of General Pacifying the West, and settled in the Daizong district. The Helai was listed as the 14th of 19 tribes of the Southern Xiongnu Shanyu.