Topic summary
Chengyang Commandery
Extracted from the Wikipedia article Chengyang Kingdom.
In 198, Chengyang Commandery was recreated during Cao Cao's rule in 198 AD. After the foundation of Jin dynasty, Chengyang was again converted to a kingdom/principality and was successively granted to Sima Zhao (司馬兆), a brother of Emperor Wu of Jin, and later Sima Jing (司馬景) and Sima Xian (司馬憲), two sons of Emperor Wu.