Lê Văn Khôi
In 1815, Emperor Gia Long summoned him back in order to suppress widespread rebellions in central Vietnam. In 1819, Duyệt was in Nghệ An and Thanh Hóa in northern Vietnam putting down revolts for Gia Long. During this time, he joined forces with a former rebel leader from a highlands minority group in Cao Bằng. This man became Duyệt's adopted son under the name Lê Văn Khôi and his men also rallied to the court. Khoi was then propelled directly into a high-ranking post in Gia Định. During the final four years of Gia Long's reign, Duyệt ascended to the highest rank in the court, and he and Pham Dang Hung, another southerner, were the only people present as the emperor died. Gia Long decreed that Duyệt take command of five royal regiments.