Cao Huan
In 265, following Sima Zhao's death, his son Sima Yan (Emperor Wu) usurped the throne from the last Wei emperor Cao Huan and established the Jin dynasty (266–420) with himself as the emperor. After his accession, Emperor Wu enfeoffed Sima Wang as the Prince of Yiyang (), with a princedom comprising 10,000 taxable households, as well as 2,000 troops under his command. In 267, Emperor Wu appointed Sima Wang as Grand Commandant ().