In Greek mythology, as recorded in Homer's Iliad, Patroclus (/pəˈtroʊkləs, pəˈtrɒkləs/; Ancient Greek: Πάτροκλος Patroklos "glory of the father") was the son of Menoetius, grandson of Actor, King of Opus, and Achilles' beloved comrade and brother-in-arms.
According to Hyginus, Patroclus is the child of Menoetius and Philomela. Homer also references Menoetius as the individual who gave Patroclus to Peleus. Menoetius is the son of Actor, King of Opus in Locris by Aegina. Aegina was a daughter of Asopus and mother of Aeacus by Zeus. Aeacus was father of Peleus, Telamon and Phocus. Actor was a son of Deioneus, King of Phocis and Diomede. His paternal grandparents were Aeolus of Thessaly and Enarete. His maternal grandparents were Xuthus and Creusa, daughter of Erechtheus and Praxithea.
During his childhood, Patroclus had killed another child in anger over a game. Menoetius gave Patroclus to Peleus, Achilles' father, who named Patroclus one of Achilles' "henchmen" as Patroclus and Achilles grew up together. Patroclus acted as a male role model for Achilles, as he was both older than Achilles and wise regarding counsel.