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Diomedes, a MythSource painting
Greek

Diomedes

The Good At The War Cry · The Strong In Battle · Tydides

01Identity

During a night raid on the Trojan camp, Diomedes killed the Thracian king Rhesus and his sleeping men after Dolon revealed the camp’s position. Diomedes is a Greek hero, son of Tydeus, Argive ruler and skilled warrior who fought at Troy and took part in the theft of Troy’s Palladium with Odysseus. After the killings, Odysseus seized Rhesus’s horses, and the two Greeks escaped to their camp before the Trojan forces could respond.

Top questions
  • Who is Diomedes?

    Diomedes is a Greek hero associated with warfare and martial prowess, heroic courage, Argive kingship.
    Source

    Source

    • War in Greek Mythology
    • Classical Mythology a to Z
    • The Library of Greek Mythology (Oxford World's Classics)
  • What is Diomedes associated with?

    warfare and martial prowess, heroic courage, Argive kingship
    Source

    Source

    • War in Greek Mythology
    • Classical Mythology a to Z
    • The Library of Greek Mythology (Oxford World's Classics)
  • What family links are recorded for Diomedes?

    Father: Tydeus, Mother: Deipyle, Spouse: Aegiale, 1 child, 1 sibling.
02Family

Parents above, children below, and the figure’s consorts named in between, the same family data as the fact box, laid out as a chart instead of a field list.

TydeusDeipyle
DiomedesComaetho

with Aegiale, Euippe

Diomedes
03The names

Tydides

Son of Tydeus

SourceThe Library of Greek Mythology (Oxford World's Classics)

Son of Tydeus

Patronymic identifying Diomedes through his father

SourceThe Library of Greek Mythology (Oxford World's Classics)

Argive Diomedes

Diomedes of Argos

SourceThe Library of Greek Mythology (Oxford World's Classics)

04The myths

10 myths, each traced to its primary text and corpus sources.

Ten years later, the sons of the heroes slain in the first war resolved to avenge their fathers and marched against Thebes. They were called the Epigoni, meaning descendants. Diomedes joined them from Argos. The Delphic oracle advised them to place Alcmaeon, son of Amphiaraus, in command. Alcmaeon hesitated because his father had ordered him to avenge himself on their mother, Eriphyle, before taking part in another war against Thebes.

Thersander, son of Polynices, persuaded Eriphyle to send Alcmaeon and his brother Amphilochus to war. He bribed her with the beautiful veil of Harmonia, which Polynices had left to him. Eriphyle’s influence overcame Alcmaeon’s resistance, and the brothers joined the expedition. The Epigoni then attacked Thebes. Aegialeus, son of Adrastus, was killed by Laodamas, son of Eteocles. Alcmaeon killed Laodamas in return.

The Thebans were defeated. On the advice of Tiresias, they sent a herald to discuss surrender while secretly loading their women and children onto wagons. They fled during the night, leaving the city behind. Tiresias went with them and died soon afterwards at the spring called Tilphussa. The refugees founded Hestiaea and settled there.

The Epigoni entered the deserted city, plundered it, and flattened its walls. Most of the Argive commanders returned to their own countries with booty. The throne of Thebes was given to Thersander. In another account, Laodamas escaped with the other Thebans, while Thersander himself led the expedition and later became king of Thebes. A further variant says that Alcmaeon later learned that Eriphyle had been bribed with the Robe of Harmonia and killed her when he returned.

The Epigoni Conquer Thebes, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

2 sources· checked 2026-08-19

  1. 1Greek Myths & TalesT1
  2. 2Homer, OdysseyT1

    Quote

    The sons of those who died at Thebes returned with Diomedes and captured the city after defeating its defenders.

    Homer, Odyssey

Odysseus and Diomedes entered Troy by night through a secret passage. They reached the citadel, killed the guards, and entered the temple of Pallas Athena. There they found the Palladium, the sacred image believed to protect the city. A prophecy held that Troy could not fall while the image remained in its shrine.

Diomedes took the Palladium. With Odysseus’ help, he climbed the wall and carried it out to the Greek camp. The statue was said to have fallen from the sky in the time of Dardanos. Some accounts also gave it powers that could hide it from human sight or blind anyone who tried to violate it.

The Greeks believed that the theft made victory possible. Their siege had lasted nearly ten years, but Troy’s walls remained unbroken. Most of the fighting had taken place outside the city, and the Greeks had found no way to enter by force. They therefore planned to bring their army into Troy by surprise. Some accounts connect the Palladium with Troy’s later fate. They say that Aeneas carried it to Italy, where the Vestal Virgins kept it at Rome.

Diomedes Steals the Palladium, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

3 sources· checked 2026-08-19

  1. 1The Library of Greek Mythology (Oxford World's Classics)T1
  2. 2Apollodorus, The LibraryT1

    Quote

    The Palladium was taken from Troy by Diomedes and Odysseus because the city was believed unable to fall while the sacred image remained.

    Apollodorus, The Library

  3. 3Light and Darkness in Ancient Greek Myth and ReligionT1

Tydeus fled Calydon after killing a member of his family. Some accounts name Alcathoos, a brother of Oineus. The author of the Alcmaeonid says that Tydeus killed the sons of Melas, who had plotted against Oineus: Pheneus, Euryalos, Hyperlaos, Antiochos, Eumedes, Sternops, Xanthippos, and Sthenelaos. Pherecydes gives another account, in which Tydeus killed his own brother, Olenias. When Agrios tried to bring charges against him, Tydeus escaped to Argos and sought refuge with Adrastos.

There, outside the royal palace, Tydeus met Polynices in the darkness. Polynices mistook him for an enemy, and they began to fight. Adrastos heard the noise and separated them. By torchlight, he saw a lion on Polynices’ shield and a boar on Tydeus’ shield. Polynices carried the lion for Heracles, while Tydeus carried the boar in memory of the Calydonian hunt. Adrastos then gave Tydeus his daughter Deipyle in marriage. She bore a son, Diomedes, who was born at Argos and raised under Adrastos’ protection.

Tydeus joined Adrastos’ expedition against Thebes as one of its seven leaders. At Nemea, the army searched for water. Hypsipyle led them to a spring, leaving behind Opheltes, the infant son of Eurydice and Lycourgos. A snake killed the child. The Argives killed the snake and buried Opheltes, whom they renamed Archemoros. At the games held in his honour, Tydeus won the boxing.

Melanippos later wounded Tydeus during the campaign, and Tydeus died. Diomedes remained in Argos, joined the Epigoni, and secretly returned with Alcmaion to attack the sons of Agrios. He later succeeded Adrastos as ruler of Argos and Tiryns and led the Argives at Troy.

The Birth and Upbringing of Diomedes, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

3 sources· checked 2026-08-19

  1. 1The Library of Greek Mythology (Oxford World's Classics)T1
  2. 2Apollodorus, The LibraryT1

    Quote

    Diomedes was born to Tydeus and Deipyle, was raised under Adrastus in Argos, and later succeeded him as ruler.

    Apollodorus, The Library

  3. 3The Library of Greek Mythology (Oxford World's Classics)T1

Dolon hurried towards the Greek ships while Odysseus and Diomedes lay among the men who had fallen in battle. Hector had promised him the horses of Rhesus, said to be the finest in the world, if he could spy on the Greeks. Dolon carried a bow and wore a grey wolf’s hide. Odysseus let him pass, then told Diomedes to drive him towards the ships and away from Troy. They followed him through the darkness like hunting dogs pursuing a hare.

Near the Greek sentinels, Diomedes ordered Dolon to stop. His spear passed over Dolon’s shoulder, and Dolon stood trembling. He offered information in exchange for his life. He said that his wealthy father would pay gold, bronze, and iron for his ransom. Odysseus questioned him, and the two Greeks forced information from him. Diomedes then cut off his head, fearing that Dolon would spy again. They hid his cap, bow, and spear, and marked the place so that they could recover them.

The two Greeks reached the dark camp of King Rhesus. No watch-fire burned there, and no guards stood outside. Diomedes killed the sleeping men while Odysseus dragged their bodies aside by the feet, so that the horses would not shy from them. Diomedes killed Rhesus, and Odysseus led away the horses, striking them with his bow because he had left the whip behind. They rode towards the ships, stopping to recover Dolon’s weapons and cap. Before dawn, they returned safely.

The Night Raid on the Trojan Camp, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

2 sources· checked 2026-08-19

  1. 1Greek Myths & TalesT1
  2. 2Apollodorus, The LibraryT1

    Quote

    Diomedes and Odysseus killed Dolon and Rhesus during a night raid, then escaped with Rhesus’ horses.

    Apollodorus, The Library

Diomedes married Aegialia, also called Aigialeia, the daughter of Adrastus and Amphithea. Adrastus was king of Argos. Diomedes later succeeded his father-in-law as ruler of Argos and Tiryns.

Before the marriage, Tydeus fled to Argos after he killed a man. In one telling, he killed Alcathoos, a brother of Oineus. In another, he killed the sons of Melas after they plotted against Oineus. Pherecydes said that Tydeus killed his own brother, Olenias. Tydeus married Deipyle, another daughter of Adrastus, and she bore Diomedes. Tydeus joined Adrastus in the expedition against Thebes, where Melanippos wounded him and caused his death.

Diomedes remained in Argos and became one of the Epigoni. The sons of Agrios seized Oineus' kingdom, gave it to their father, imprisoned Oineus, and ill-treated him. Diomedes then arrived secretly from Argos with Alcmaeon and killed most of the sons of Agrios. The telling ended before it gave the full outcome. Diomedes later succeeded Adrastus and became ruler of Argos and Tiryns.

Diomedes led the Argives at Troy. During the fighting, he wounded Aphrodite when she tried to save her son Aeneas. Later tellings attributed Aegialia's infidelity to Aphrodite's anger after Diomedes wounded her.

Diomedes Marries Aegialia, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

2 sources· checked 2026-08-19

  1. 1The Library of Greek Mythology (Oxford World's Classics)T1
  2. 2Apollodorus, The LibraryT1

    Quote

    Diomedes married Aegialia, the daughter of Adrastus, and later ruled Argos after succeeding her father.

    Apollodorus, The Library

Diomedes attacked Aeneas, the Trojan prince and, after Hector, the best and bravest Trojan warrior. He wounded Aeneas, who came close to death. Since Aeneas was Aphrodite’s son, the goddess descended to the battlefield and lifted him in her arms. Diomedes recognised that she was not a goddess suited to fighting. He leapt at her and wounded her hand.

Aphrodite cried out and dropped Aeneas. She left the battlefield for Olympus, weeping from the pain. Zeus received her there. He told her to leave warfare to others and to remember that her powers belonged to love.

Aeneas lay unconscious and would have died without help. Aphrodite and Apollo rescued him from the fighting. Apollo enveloped him in a cloud and carried him to Pergamos, the sacred place of Troy where his temple stood. Leto and Artemis healed Aeneas there and restored his strength.

In one account, Apollo then created a phantom of Aeneas for the armies to fight over. The real Aeneas remained under divine protection. Achaeans and Trojans attacked the phantom and killed one another around it. Aeneas therefore survived the wound inflicted by Diomedes, while Aphrodite was forced to leave him after Diomedes injured her.

Diomedes Wounds Aphrodite, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

3 sources· checked 2026-08-19

  1. 1Greek religionT1
  2. 2the ancient sourcesT1

    Quote

    When Aphrodite tried to save Aeneas, Diomedes wounded her, and Apollo carried Aeneas to Pergamos for healing.

    the ancient sources

  3. 3War in Greek MythologyT1

Penthesilea charged at the head of Priam’s household, while her white horse swept through the Greek ranks. She had come to Troy with twelve Amazon companions after Ares accidentally killed Hippolyta. Distraught by the death, she sought an honourable end in battle and vowed to kill Achilles. Priam saw an eagle holding a dove, an omen that boded ill for her expedition.

She killed Molios, Persinoos, Eilissos, Antiphates, Lernos, Hippalmos, Haemonides, and Elasippus. Her companions Derinoe and Clonie each killed a Greek chief. Podarkes killed Clonie, and Penthesilea cut off his hand. Idomeneus killed Bremousa, Meriones killed Evadre, and Diomedes killed Alcibie and Derimacheia. The Amazons’ bodyguard was reduced as the battle continued.

Achilles met Penthesilea in the fighting and drove his spear through her breast. Another account says that he first speared her horse, bringing horse and rider down together. Her helmet fell, and the Greeks saw her face as she died. Some traditions show Achilles holding her body or supporting her after the death blow, with their eyes meeting. He felt pity and remorse, thinking that he should have spared her and married her instead.

Thersites mocked Achilles for his alleged passion for the dead Amazon. One account says that he gouged out Penthesilea’s eyes with his spear point. Diomedes killed Thersites for the insult and threw his body into the river. Achilles then sailed to Lesbos, sacrificed to Apollo, and was purified by Odysseus for the killing, as recorded in the Aethiopis. Diodorus Siculus calls Penthesilea the last Amazon to win distinction for bravery, after which the race declined and disappeared.

Diomedes Kills Thersites, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

3 sources· checked 2026-08-19

  1. 1The Library of Greek Mythology (Oxford World's Classics)T1
  2. 2War in Greek MythologyT1
  3. 3Apollodorus, The LibraryT1

    Quote

    Thersites mocked Achilles after Penthesilea’s death, so Diomedes killed him and Achilles went to Lesbos to be purified.

    Apollodorus, The Library

Ares entered the battle on Hector’s side, and Diomedes saw the bloodstained god among the fighting. Diomedes called to the Greeks to withdraw. They moved slowly while keeping their faces towards the Trojans.

Hera was angered by Ares’ violence. She went to Olympus and asked Zeus whether she might drive him from the battlefield. Zeus granted permission. Hera then went to Diomedes and told him to strike the war god without fear.

In another account, Hera and grey-eyed Athena travelled to Troy in Hera’s chariot. They reached the place where the bravest Argives were gathered. Hera called out in the voice of Stentor, whose bronze voice was as loud as that of fifty men. She shamed the Argives for allowing the Trojans to fight so far from their city. She reminded them that they had once feared Achilles’ spear.

Hera’s words gave Diomedes confidence. He rushed at Ares and threw his spear. Athena drove the weapon into the god’s body. Ares bellowed as loudly as ten thousand men crying out in battle. Greeks and Trojans trembled at the sound. Unable to bear the wound, Ares fled to Olympus and complained to Zeus.

Diomedes Wounds Ares, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

2 sources· checked 2026-08-19

  1. 1War in Greek MythologyT1
  2. 2the ancient sourcesT1

    Quote

    With Hera’s approval and Athena’s help, Diomedes wounded Ares and drove him from the battlefield.

    the ancient sources

Dolon ran towards the Greek ships wearing a grey wolf’s hide and carrying his bow. Hector had promised him the horses of Rhesus, which were said to be the best in the world. Odysseus saw him and told Diomedes to let him pass. They lay among the battle dead until Dolon had gone by, then rose and pursued him like two greyhounds chasing a hare.

Near the Greek sentinels, Diomedes ordered Dolon to stop or face death. His spear passed over Dolon’s shoulder. Dolon halted, trembling, and offered ransom. He said that his wealthy father would pay gold, bronze, and iron for his release. Diomedes refused to spare him because he feared that Dolon would return to spy on the Greeks. He struck off Dolon’s head with his sword. The two Greeks hid Dolon’s cap, bow, and spear, and marked the place so that they could recover them.

They then reached the camp of Rhesus, the Thracian king. No watch-fire burned there, and no guards stood outside. Diomedes moved among the sleeping men and killed them. Odysseus seized the bodies by the feet and dragged them aside. The horses had never been in battle and might shy if they were led over the dead. Diomedes killed Rhesus. Odysseus led out the king’s horses, striking them with his bow because he had left the whip in the chariot.

They had no time to take the chariot. They mounted the horses and rode towards the ships, stopping on the way to recover Dolon’s spear, bow, and cap.

Diomedes Slays Rhesus, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

2 sources· checked 2026-08-19

  1. 1Greek Myths & TalesT1
  2. 2Apollodorus, The LibraryT1

    Quote

    Diomedes killed Rhesus and his sleeping companions, while Odysseus led away the king’s horses during their night raid.

    Apollodorus, The Library

Diomedes fled Argos after learning that Aegialia and her allies were plotting to kill him. He had returned from Troy to the kingdom he ruled after succeeding his father-in-law, Adrastos. His wife was Aegialia, also called Aigialeia in the sources.

Aegialia had been unfaithful to him. One account linked her conduct to Aphrodite’s anger. During the war at Troy, Diomedes had wounded the goddess when she tried to protect her son Aeneas. Aphrodite’s anger was therefore given as a reason for Aegialia’s treachery.

The warning reached Diomedes before the plot could be carried out. He escaped from Argos and abandoned the kingdom. He had ruled Argos and Tiryns after Adrastos and had led the Argives at Troy, but he could not remain without risking his life.

Some accounts connect his flight with the end of his rule rather than with a military defeat. His loss came through the plot within his household. Aegialia and her allies intended to murder him, and Diomedes left before they could do so. He therefore survived the danger, but no longer held Argos or led its people.

Diomedes Flees Argos, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

2 sources· checked 2026-08-19

  1. 1The Library of Greek Mythology (Oxford World's Classics)T1
  2. 2Apollodorus, The LibraryT1

    Quote

    After returning from Troy, Diomedes fled Argos when Aegialia and her allies plotted against his life.

    Apollodorus, The Library

The myths across MythSource where Diomedes features, each on that figure’s page.

The film

The Underdrawing video on Diomedes embeds here once it publishes.