Peter of Saint Mary
Dominican religious and martyr at Ōmura
Feast: 29 July (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
At Ōmura in Japan, the Blessed martyrs Louis Bertrand, priest of the Order of Preachers, Mancio of the Holy Cross and Peter of Saint Mary, religious of the same Order, put to the stake for Christ.
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 29 July as a religious of the Order of Preachers put to the stake for Christ at Ōmura in Japan.
The cause
The cause continues. No postulation address is published here yet. Favours received through this person’s intercession, and offers of help, are best sent to the religious order or congregation they belonged to, or to the diocese where the cause was opened; either will pass them to the postulation.
Connected on this site
- Louis Bertrand Saint“At Ōmura in Japan, the Blessed martyrs Louis Bertrand, priest of the Order of Preachers, Mancio of the Holy Cross and Peter of Saint Mary, religious of the same Order, put to the stake for Christ.” — this site's research
- Louis Bertrand of Ōmura Blessed“At Ōmura in Japan, the Blessed martyrs Louis Bertrand, priest of the Order of Preachers, Mancio of the Holy Cross and Peter of Saint Mary, religious of the same Order, put to the stake for Christ.” — this site's research
- Ludwik Exarch Blessed“He entered the Dominican Order and travelled to Japan as a missionary during the harsh persecution under the Tokugawa shogunate, working secretly around Omura together with two Japanese Dominicans, Mancio of the Holy Cross and Peter of Saint Mary, administering the sacraments and supporting the hidden Christian…” — this site's research
- Mancio of the Holy Cross Blessed“At Ōmura in Japan, the Blessed martyrs Louis Bertrand, priest of the Order of Preachers, Mancio of the Holy Cross and Peter of Saint Mary, religious of the same Order, put to the stake for Christ.” — this site's research
Checked against the sources listed on 22 September 2026. Corrections welcome.