Zhang Jun (Former Liang)

Zhang Jun (張駿) (307–346), courtesy name Gongting (公庭), formally Duke Zhongcheng of Xiping (西平忠成公, posthumous name given by Jin Dynasty (265-420)) or Duke Wen of Xiping (西平文公, posthumous name used internally in Former Liang) was a ruler of the Chinese state Former Liang. During his reign, he at times used the Jin-created title of Duke of Xiping, but when forced to submit to Han Zhao and Later Zhao, he used the title Prince of Liang. Late in his reign, even when not under Later Zhao's pressure, he claimed the title of "Acting Prince of Liang." During the brief reign of his son Zhang Zuo, he was honored as Prince Wen of Liang (涼文王).

Zhang Jun was the son of Zhang Shi (張寔), the Jin governor of Liang Province (涼州, modern central and western Gansu) and the Duke of Xiping. In 320, Zhang Shi was assassinated by his guards Yan She (閻涉) and Zhao Ang (趙卬), who were followers of the magician Liu Hong (劉弘), who had falsely prophesized that he would be the ruler of Liang Province. Zhang Shi's brother Zhang Mao captured and executed Liu and his followers. Because Zhang Jun was still young (aged 13) at the time, Zhang Shi's subordinates requested that Zhang Mao take over the governorship. (Because Zhang Mao also declared a general pardon at the time, a power normally reserved for an emperor, this was often viewed as the date of Former Liang's independence from Jin.) Zhang Mao made Zhang Jun a general, and later in the year named him his heir. In 324, Zhang Mao died, and Zhang Jun succeeded him. Because Zhang Mao had previously been forced to submit to Han Zhao and was given the title the Prince of Liang, Zhang Jun carried that title as well, even though internally he used the Jin-vested title of Duke of Xiping.

In 326, Zhang Jun, in fear of Han Zhao, forcibly relocated the people of Longxi (隴西) and Nan'an (南安, collectively roughly Dingxi, Gansu) Commanderies to the capital Guzang (姑臧, in modern Wuwei, Gansu). He also sought peace with Cheng Han's emperor Li Xiong and further tried to persuade Li Xiong to become a Jin vassal. Li Xiong agreed to peace and further did not completely rebuf Zhang Jun's overture, but also did not actually become a Jin vassal.

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