Battle of Xiangyang
Jia Sidao (1213–1275), courtesy name Shixian, was a Chinese politician. He was a chancellor of the late Song dynasty of China, the younger brother of a concubine of Emperor Lizong, who subsequently had a relationship of special favor with Emperor Duzong, and had roles in the Mongol-Song Battle of Xiangyang and an unpopular land nationalization program in the 1260s. Jia was assassinated by a court-designated sheriff charged with his custody after his court failures in 1275.