Quan Yi

Quan Yi ( 4th century), courtesy name Ziliang, was a minister of Former Qin and Later Qin during the Sixteen Kingdoms period. Quan Yi was one of the followers of the Qiang general, Yao Xiang, who surrendered from Later Zhao to the Jin dynasty. After Yao Xiang was killed in 357, Quan Yi followed Xiang's brother, Yao Chang and surrendered to Former Qin, where he served for 28 years. Following the disastrous Battle of Fei River in 383, Quan Yi attempted to stop Murong Chui from marching to north, but was outmaneuvered. As Western Yan troops encircled the capital Chang'an, Quan Yi fled to Yao Chang, now ruler of Later Qin, who he served until his death.

Quan Yi was also supposedly the ancestor of the Tang dynasty chancellor, Quan Deyu. Provided by Wikipedia