In Greek mythology, Telamon // (Ancient Greek: Τελαμών), son of the king Aeacus of Aegina, and Endeïs and brother of Peleus, accompanied Jason as one of his Argonauts, and was present at the hunt for the Calydonian Boar. In the Iliad he was the father of Greek heroes Ajax the Great and Teucer the Archer by different mothers. Some accounts mention a third son of his, Trambelus. He and Peleus were also close friends of Heracles, assisting him on his expeditions against the Amazons and against Troy (see below).
In an earlier account recorded by Pherecydes of Leros, Telamon and Peleus were not brothers, but friends. This would accord with Peleus being the father of the other hero Achilles (called Pelides - i.e. son of Peleus - by Homer). According to this account, Telamon was the son of Actaeus and Glauce, with the latter being the daughter of Cychreus, king of Salamis; and Telamon married Periboea, daughter of King Alcathous of Megara.
After killing their half-brother, Phocus, Telamon and Peleus had to leave Aegina. King Cychreus of Salamis welcomed Telamon and befriended him. Telamon married Cychreus' daughter Periboea, who gave birth to Ajax. Later, Cychreus gave Telamon his kingdom. In other versions of the myth Cychreus' daughter is named Glauce, and Periboea is Telamon's second wife, and the daughter of Alcathous.
Telamon also figures in both versions of Heracles' sacking of Troy, which was ruled by King Laomedon (or Tros in the alternate versions). Before the Trojan War, Poseidon sent a sea monster to attack Troy.
In the King Tros version, Heracles (along with Telamon and Oicles) agreed to kill the monster if Tros would give him the horses he received from Zeus as compensation for Zeus' kidnapping Ganymede, Tros' son. Tros agreed; Heracles succeeded and Telamon married Hesione, Tros' daughter, giving birth to Teucer by her.
In the King Laomedon version, Laomedon planned on sacrificing his daughter Hesione to Poseidon in the hope of appeasing him. Heracles rescued her at the last minute and killed both the monster and Laomedon and Laomedon's sons, except for Ganymede, who was on Mount Olympus, and Podarces, who saved his own life by giving Heracles a golden veil Hesione had made. Telamon took Hesione as a war prize and married her, and she gave birth to Teucer by him. Due to Ajax committing suicide at Troy, Telamon banished Teucer from Salamis for not bringing his brother home.
In Apollodorus' Library, Telamon was almost killed during the siege of Troy. Telamon was the first one to break through the Trojan wall, which enraged Hercules as he was coveting that glory for himself. Hercules was about to cut him down with his sword when Telamon began to quickly assemble an altar out of nearby stones in honor of Hercules. Hercules was so pleased, after the sack of Troy he gave Telamon Hesione as a wife. Hesione requested that she be able to bring her brother Podarces with her. Hercules would not allow it unless Hesione bought Podarces as a slave. Hesione paid for her brother with a veil. Podarces name was then changed to Priam – which, according to Greek author Apollodorus, was derived from the Greek phrase “to buy”.
The Telamon (also Song of Telamon, Telamon Song, Telamon-song) is an ancient Greek song (fl. 5th century BC) only found referred to by name in some ancient Greek plays and later scholia or commentaries. It is usually thought to be a warlike song about Telamon's son Ajax, though some other commentaries thought it to be a mournful song about Telamon himself. It began with: "Son of Telamon, warlike Ajax! They say you are the bravest of the Grecians who came to Troy, next to Achilles."