Commandery
Le’an 乐安Ancestral Commandery
The Jiang Clan of Le’an: Descendants of the Duke of Zhou
Main line: descended from the Ji surname. Bo Ling, son of the Duke of Zhou, was enfeoffed with the State of Jiang (Huaibin, Henan); when the state fell, descendants took the state name as their surname.
Multiple origins: a small number of surname changes by ethnic minorities.
Root point: the ancient State of Jiang in Huaibin, Henan.
▸ Domestic migration: originated in the Central Plains; crossed south in the Wei–Jin era and took root in Jiangnan; spread into Fujian and Guangdong in the Tang and Song; in the Ming and Qing, the Huguang-to-Sichuan migration.
▸ Overseas branch: the Minnan and Hakka Jiang went to Nanyang in the late Qing and Republican era.