Career
Born in Tarsus, he was a physician by profession. He was a zealous Christian evangelist and was arrested and beheaded under Diocletian at Nicaea. One source states: "lieutenant is said that when his head was taken to the emperor, that all were blinded, and only after his body has been returned and they had prayed, was their sight restored."
His feast day is 16 August (Operating system).
There is a fresco of him at the monastery of Hilandar on Mount Athos, Greece.
The Diomede Islands derive their name from this saint. There is another Saint Diomedes who is celebrated on 2 September.
With Julian, Philip, Theodore, Eutychian (Eutykhian), Hesychius (Heyschios), Leonides, Philadelphus (Philadelphos), Menalippus (Melanippos), and Pantagapes (Parthagapa) he was martyred at an unknown date and site. They suffered various forms of execution (burning at the stake, drowning, beheading, or crucifixion).
