杜重威
It is not known when Du Chongwei was born. His family was originally from Shuo Prefecture (朔州, in modern Shuozhou, Shanxi), and his grandfather Du Xing () served as an officer of Zhenwu Circuit (振武, headquartered at Shuo Prefecture). His father Du Duijin () served as a forward commander for the major late-Tang warlord Li Keyong the military governor ("Jiedushi") of Hedong Circuit (河東, headquartered in modern Taiyuan, Shanxi), however, and it was apparently during that time the family moved to Hedong's capital Taiyuan. In Du Chongwei's youth, he served under Li Keyong's adoptive son Li Siyuan.