步騭
Bu Zhi was from Huaiyin County (), Linhuai Commandery (), which is around present-day Huai'an, Jiangsu. He traced his ancestry to Yangshi (), an aristocrat of the Jin state in the Spring and Autumn period. As Yangshi's estate was located in an area called "Bu" (步; around present-day Linfen County, Shanxi), his descendants adopted "Bu" as their family name. One of Yangshi's descendants was Bu Shusheng (步叔乘; or Bu Shucheng), a disciple of Confucius. Sometime in the early Western Han dynasty, a certain General Bu received the peerage "Marquis of Huaiyin" () from the emperor as a reward for his contributions in battle. Bu Zhi descended from this General Bu, whose marquisate was in Huaiyin County.