Minh Mạng (14 February 1791 – 20 January 1841; born Nguyễn Phúc Đảm, also known as Nguyễn Phúc Kiểu) was the second emperor of the Nguyễn Dynasty, reigning from 14 February 1820 (his 29th birthday) until his death, on 20 January 1841. He was a younger son of Emperor Gia Long, whose eldest son, Crown Prince Cảnh, had died in 1801. Minh was well known for his opposition to French involvement in Vietnam, and for his rigid Confucian orthodoxy.