Bian Zhang (died 187), originally named Bian Yun, was an official who lived in the Eastern Han dynasty of China. He served as the Prefect of Xin'an County.Xiandi Chunqiu annotation in Houhanshu vol. 72. (biography of Dong Zhuo)
In 185, Beigong Boyu of the Qiang tribe rebelled in Liang Province. Beigong Boyu took Bian Zhang and Han Sui, another Han official, hostage and stopped all attempts to return them. Bian Zhang was forced to participate in the rebellion or else he would be killed. He became the overall commander of the rebels, but was defeated in battle with Dong Zhuo and Sun Jian and died of illness shortly after;Dianlüe annotation in Sanguozhi, vol.01 (biography of Cao Cao) according to other sources, he was killed by Han Sui.(韩遂杀边章及北宫伯玉、...) Zizhi Tongjian vol. 58. Dong Zhuo's biography in Houhanshu also adopted this viewpoint.
See also Lists of people of the Three Kingdoms Notes
References
Fan, Ye (5th century). Book of the Later Han (Houhanshu). Sima, Guang (1084). Zizhi Tongjian.