沮渠牧犍
Juqu Mujian was never named heir by his father's will, as his father initially created Juqu Zhengde (沮渠政德), probably his oldest brother, as heir apparent, in 413. After Juqu Zhengde was killed in battle against Rouran forces in 423, Juqu Mengxun created another brother of Juqu Mujian's, Juqu Xingguo (沮渠興國), as heir apparent. After Juqu Xingguo was captured and detained by the Western Qin prince Qifu Mumo in 429, and Juqu Mengxun failed in his attempt to ransom Juqu Xingguo back from Western Qin, he created a younger brother of Juqu Mujian's, said to be of the same mother as Juqu Xingguo's, Juqu Puti (沮渠菩提), as heir apparent. However, as Juqu Mengxun was ill in 433, the nobles and the officials considered Juqu Puti too young to govern, so they deposed Juqu Puti and made Juqu Mujian, who was considered studious and kind, heir apparent instead. Juqu Mengxun soon died, and Juqu Mujian succeeded to the throne. He created his son Juqu Fengtan (沮渠封壇) as heir apparent.