James Matsuo Denshi
Japanese sailor and martyr at Nagasaki
Feast: 19 August (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
At Nagasaki in Japan, the blessed martyrs Louis Flores, priest of the Order of Preachers, Peter de Zuniga, priest of the Order of the Hermits of Saint Augustine, and thirteen Japanese sailor companions, who landed in the harbour and were arrested at once because of their Christian faith, and after various torments all underwent one and the same martyrdom together.
Among those named is Blessed James Matsuo Denshi, one of the thirteen Japanese sailors.
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 19 August as one of the thirteen Japanese sailors martyred at Nagasaki with Louis Flores and Peter de Zuniga.
- Roman Martyrology, 19 August (Italian Bishops' Conference, Santo del giorno)
- Wikidata Ra9eea3f1 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.