Han Xiandi
When the Han dynasty Emperor Xian of Han was dethroned by the Cao Wei Emperor Cao Pi, Cao granted Emperor Xian the title Duke of Shanyang (山陽公). His grandson Liu Kang (劉康) inherited his dukedom, which lasted for 75 more years and two more dukes, Liu Jin (劉瑾) and Liu Qiu (劉秋), until the line was exterminated by invading Xiongnu tribes in about 309, during the Jin dynasty.