Tự Đức, Vietnamese emperor (born 1829)

Tự Đức

4th Emperor of Nguyễn-dynasty Vietnam (r. 1847–1883)

Tự Đức was the fourth emperor of the Nguyễn dynasty of Vietnam, and the country's last pre-colonial monarch. Ruling for about 36 years from 1847 to 1883, this made him the longest reigning Nguyễn emperor.