Wang Tingcou.

About Wang Tingcou

Wang Tingcou, formally the Duke of Taiyuan (太原公), was a general of the Chinese Tang dynasty who, in 821, during the reign of Emperor Muzong, took over control of Chengde Circuit and thereafter ruled it in a de facto independent manner from the imperial government. He was said to be particularly cruel even for a warlord. After his death, his family held onto control of the circuit, even after the end of Tang dynasty, until his great-great-grandson Wang Rong was overthrown in 921 – 100 years after Wang Tingcou had initially taken over the circuit.