François Jaccard
French missionary (1799–1838)
Feast: 21 September (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
In the fortress of Quang-Tri in An Nam, now Viet Nam, the holy martyrs François Jaccard, priest of the Society of Foreign Missions of Paris, and Thomas Tran Van Thien, who, under the emperor Minh Mang, suffered prison and beatings for Christ and died, at last, strangled.
The miracles
The Roman Martyrology does not describe the miracles approved in the cause.
Why that counted as sanctity
The Roman Martyrology remembers him on 21 September as a Paris Foreign Missions priest imprisoned, beaten and strangled for Christ at Quang-Tri.
Connected on this site
- Vietnamese Martyrs Saint honoured together
- Roman Martyrology, 21 September (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q955109 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.