Cao Huan
After Sima Yi's death on 7 September 251, his sons Sima Shi and Sima Zhao continued to control the Wei government and eliminate any form of political opposition. The Cao family's influence in Wei weakened over time as the Sima family's became stronger. In 266, Sima Zhao's son, Sima Yan, usurped the throne from Cao Huan and replaced the Cao Wei state with the Jin dynasty, with himself as the new emperor.