Saint Diomedes (Diomede) of Tarsus (d. between 298 and 311 AD) is venerated as a Christian saint and martyr, one of the Holy Unmercenaries. 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."
His feast day is 16 August (O.S.). There is a fresco of him at the monastery of Hilandar on Mount Athos, Greece.
The Diomede Islands derive their name from this saint. Vitus Bering sighted the Diomede Islands on 16 August (O.S., 27 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).
Diomedes (/ˌdaɪəˈmiːdiːz/ or /ˌdaɪˈɒmɪdiːz/) or Diomede (/ˈdaɪəmiːd/;Greek: Διομήδης Diomēdēs "God-like cunning, advised by Zeus") is a hero in Greek mythology, known for his participation in the Trojan War.
He was born to Tydeus and Deipyle and later became King of Argos, succeeding his maternal grandfather, Adrastus. In Homer's Iliad Diomedes is regarded alongside Ajax as one of the best warriors of all the Achaeans (behind only Achilles in prowess). Later, he founded ten or more Italian cities. After his death, Diomedes was worshipped as a divine being under various names in Italy and also in Greece.
Diomedes was, on his father’s side, an Aetolian, and on his mother's an Argive. This is because his father Tydeus left Calydon and fled to Argos in order to avoid being persecuted by his uncle Agrius. He married King Adrastus's daughter Deipyle.
Tydeus was one of the Seven Against Thebes. This expedition failed and all leaders, including Tydeus were killed. Tydeus was Athena’s favourite warrior at the time, and when he was dying she wanted to offer him a magic elixir (which she had obtained from her father) that would make him immortal. However, she withdrew the intended privilege in apparent disgust when Tydeus gobbled down the brains of the hated enemy who had wounded him.
King Diomedes of Thrace (Greek: Διομήδης) was a giant, the son of Ares and Cyrene. He lived on the shores of the Black Sea ruling the warlike tribe of Bistones. He is known for his four man-eating horses, which Heracles stole in order to complete the eighth of his Twelve Labours, slaying Diomedes in the process.
Heracles encounters King Diomedes through performing his eighth labour. Eurystheus, King of Tiryns and Heracles cousin, had sent Heracles to capture the Mares of Diomedes after he had completed his seventh labour, capturing the Cretan Bull. Heracles travelled to the shores of the Black Sea to meet King Diomedes. He was said to have been the son of the god Ares and Cyrene, who is said to be the daughter of Hypseus, King of the Lapiths. King Diomedes was a savage; he enjoyed feeding strangers and prisoners to his mares. They did not like the taste of oats and grain; instead they feasted on human flesh, which their master gave them willingly. His mares could not be controlled; they were savage, just like the King. They could not be tethered by regular rope; instead they needed to be tethered to a bronze manger by chains, so they would not escape.
Diomedes may mean: