- Domenico Nicolao Dinh Dat
Layman in the apostolic vicariate of East Tonkin (in modern Vietnam). A soldier during the persecutions of emperor Minh Mang, he was ordered by the army to renounce Christianity and prove it by trampling a crucifix; he refused and was tortured until he relented and apostasized. Released, he repented, returned to his faith, and as a self-imposed penance, he wrote to the emperor to proclaim his Christianity. Martyr.
- “Saint Ðaminh Ðinh Ðat“. CatholicSaints.Info. 15 July 2015. Web. 27 April 2017. <>