Gongsun Zan (simplified: 公孙瓒, traditional: 公孫瓚, pinyin: Gōngsūn Zàn), courtesy name Bogui (伯圭 Bóguī), was a Han warlord based in You Province in the north. He rose as a frontier commander against the Xiongnu and later fought the Yellow Turbans. He employed Liu Bei and Zhao Yun and sent Liu Bei with troops to assist Tao Qian in Xu Province when Cao Cao invaded. He clashed with Yuan Shao over hegemony in the north and was besieged at Yijing (Yi City); in 199 he was defeated, set fire to his stronghold, and committed suicide.
Biography
Frontier and early campaigns
Gongsun Zan was from Liaoxi and served on the northern frontier. He was known for his white horses and fierce cavalry. He fought the Xiongnu and took part in suppressing the Yellow Turban Rebellion. Liu Bei and Zhao Yun served under him for a time.
Alliance with Liu Bei and Tao Qian
When Cao Cao invaded Xu Province to avenge his father, Tao Qian sought help. Gongsun Zan sent Liu Bei with troops to assist; that intervention led to Liu Bei’s stay in Xu and eventually to Tao Qian ceding the province to him. Gongsun Zan remained a power in the north but did not expand south in person.
War with Yuan Shao and death
Gongsun Zan and Yuan Shao competed for control of the north. After the battle at Jieqiao and other engagements, Yuan Shao gradually gained the upper hand. Gongsun Zan withdrew to Yijing (Yi City), where he was besieged. In 199 Yuan Shao’s forces broke in; Gongsun Zan killed his family and committed suicide in a tower set ablaze.
Legacy
Gongsun Zan is remembered as a major northern warlord who employed Liu Bei and Zhao Yun and whose decision to send Liu Bei to Xu Province helped shape Liu Bei’s later rise. His defeat by Yuan Shao removed one of the main rivals to Yuan Shao and Cao Cao in the north.