Saint Emmanuel was a Christian martyr who lived in Anatolia during the third and fourth centuries. He is remembered for his death in Sirmium, located in modern-day Serbia, around the year 304. His execution occurred during the widespread persecutions led by the emperor Diocletian. He was martyred alongside forty-two other individuals, including figures such as Quadratus and Theodocius, who shared his fate during this period of religious conflict.
Martyrdom and death

During the intense period of persecution under Diocletian, Emmanuel was arrested in Sirmium. He was eventually executed along with a group of forty-two fellow Christians. This collective martyrdom took place around 304, marking his end as a witness to his faith in the Roman province.
Veneration
In the Catholic tradition, he is recognized as a saint. His memory is honored annually on March 26, which serves as his designated feast day. He is commemorated within the pre-schism traditions for his steadfastness during the imperial persecutions.
