Zhang Gui (, 255 – 19 June 314)Vol.124 of Taiping Yulan, citing Spring and Autumn Annals of the Sixteen Kingdoms, recorded that Zhang Gui died at the age of 60 (by East Asian reckoning) on the jichou day of the 5th month of the 2nd year of the Jianxing era of the reign of Emperor Min of Jin. was the governor of Liang province and first Duke of Xiping under the Western Jin. He was the seventeenth-generation descendant of Zhang Er, the King of Changshan from the Chu–Han Contention era. In February 301,1st month of the 1st year of the Yongning era, per vol.84 of Zizhi Tongjian. The month corresponds to 26 Jan to 24 Feb 301 in the Julian calendar. he was appointed governor of Liang province. In 313, Emperor Min of Jin bestowed upon Zhang the title "Duke of Xiping"; Zhang declined the title.Jin Shu, vol.86 and Taiping Yulan, vol.124 (citing Shiliuguo Chunqiu) The following year, Zhang Gui died from an illness and his followers supported his eldest son Zhang Shi to continue as governor of Liang province. Life Before the War of the Eight Princes When Zhang Gui was young, he was friendly with Huangfu Mi, who was from the same commandery.(与同郡皇甫谧善...) Jin Shu, vol.86 During the reign of Emperor Wu of Jin, Zhang Gui once served under Yang Yao (younger brother of Yang Jun) who was then General of the Guards.(卫将军杨珧辟为掾...) Jin Shu, vol.86
During the War In 303-304, Sima Yong and Sima Ying sieged Luoyang. Zhang Gui sent 3000 troops to assist the then-regent of Emperor Hui, Sima Ai.(河间、成都二王之难，遣兵三千，东赴京师。) Jin Shu, vol.86
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