阮福映
As Crown Prince Nguyen Canh had died of smallpox during the war against the Tây Sơn, it was assumed that Canh's son would succeed Gia Long as emperor, but in 1816 Nguyễn Phúc Đảm, the son of his second wife, was appointed instead, and ruled as Minh Mạng. Gia Long chose him for his strong character and his deep aversion to westerners, whereas Canh's lineage had converted to Catholicism and were reluctant to maintain their Confucian traditions such as ancestor worship. Before his accession, Nguyễn Phúc Đảm was reported to have praised the Japanese for having expelled and eradicated Christianity from their country. Gia Long told his son to treat the Europeans respectfully, especially the French, but not to grant them any position of preponderance. Gia Long died on 3 February 1820 and was buried at the Thien Tho Tomb and posthumously named Thế Tổ Cao Hoàng đế.