Tags: Saint.
François-Isidore Gagelin (10 May 1799-17 October 1833) was a French missionary of the Paris Foreign Missions Society in Vietnam. He died a martyr and became the first French martyr of the 19th century in Vietnam. He was born in Montperreux Doubs. He left for Vietnam in 1821. In 1826 when Emperor Minh Mạng ordered all missionaries to gather at the capital Huế he fled to the south to Đồng Nai in Cochinchina.
