Claudius Cayx-Dumas
French Jesuit
Feast: 2 September (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
At Paris in France, the passion of Blessed martyrs Jean Marie du Lau d'Allemans, François-Joseph and Pierre-Louis de la Rochefoucauld, bishops, and ninety-three companions, clerics or religious, who, gathered in the convent of the Carmelites, were slaughtered for Christ out of hatred of religion for having refused to take the impious oath imposed on the clergy during the French Revolution. Among those named is Blessed Claudius Cayx-Dumas, priest.
The miracles
As a martyr he was raised to the altars without a miracle.
Why that counted as sanctity
The Roman Martyrology remembers him on 2 September among the martyrs slaughtered at the Carmelite convent in Paris for refusing the oath imposed on the clergy during the French Revolution.
The cause
Claudius Cayx-Dumas has been beatified; the cause continues. Favours received, and offers of help, go to the postulation, the office that carries the cause forward: Jesuits: Blessed Claudius Cayx-Dumas.
Connected on this site
- Jean Marie du Lau Blessed“At Paris in France, the passion of Blessed martyrs Jean Marie du Lau d'Allemans, François-Joseph and Pierre-Louis de la Rochefoucauld, bishops, and ninety-three companions, clerics or religious, who, gathered in the convent of the Carmelites, were slaughtered for Christ out of hatred of religion for having refused…” — this site's research
- Roman Martyrology, 2 September (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q2652519 — dates, feast day and identifiers (CC0)
- English Wikipedia — Claudius Cayx-Dumas (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.