Saint Diomedes (Diomede) of Tarsus (d. between 298 and 311 AD) is venerated as a Christian saint and martyr, one of the Holy Unmercenaries[1]. 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: "It 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."[2]
His feast day is 16 August (O.S.). There is a fresco of him at the monastery of Hilandar.
The Diomede Islands derive their name from this saint. Vitus Bering sighted the Diomede Islands on 16 August (O.S., 26 August N.S.) 1728, the day when the Russian Orthodox Church celebrates the memory of Saint Diomedes.
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).