Eastern Han dynasty. His marquisate was changed to Xiangyi County (襄邑縣; present-day Sui County, Shangqiu, Henan) in the following year. In 221, a year after Cao Jun's elder half-brother Cao Pi ended the Han dynasty and established the state of Cao Wei, Cao Jun was promoted from a marquis to a duke. In 222, he received the title "Prince of Chenliu" (陳留王). Two years later, his princedom was changed from Chenliu (陳留; around present-day Kaifeng, Henan) to Xiangyi County. In 232, during the reign of Cao Pi's son Cao Rui, Cao Jun's princedom was relocated back to Chenliu. Cao Jun died in 259 during the reign of Cao Mao.[3]
Cao Jun was succeeded by his son, Cao Ao (曹澳). The number of taxable households in Cao Ao's princedom increased throughout the reigns of the Wei emperors until it reached 4,700.[4]
^ abCao Mao's biography in the Sanguozhi recorded that Cao Jun died in the 7th month of the 4th year of the Ganlu era of Cao Mao's reign.[1] This month corresponds to 6 August to 3 September 259 in the Gregorian calendar.