Apollodorus sets him in the Aeolid stem: Calyce, daughter of Aeolus, bore Endymion to Aethlius, and he led Aeolians from Thessaly and founded Elis. Some, the genealogist adds, called him a son of Zeus instead. Being of surpassing beauty he drew the love of the Moon, and when Zeus allowed him to choose whatever gift he would, he chose to sleep for ever, remaining deathless and ageless.2Pseudo-Apollodorus — Bibliotheca 1.7.5

From his line the Aetolians take their name. Apollodorus says Endymion had by a Naiad nymph — or, as some say, by Iphianassa — a son Aetolus, who slew Apis the son of Phoroneus, fled to the Curetian country, killed his hosts there, and called the land Aetolia after himself.3Pseudo-Apollodorus — Bibliotheca 1.7.6⚖Told differently in other tellings — change the lens on the card

Pausanias gathers the Elean account. Aethlius, son of Zeus and Protogeneia daughter of Deucalion, was the first to rule the land and the father of Endymion; the Eleans hold that the Moon loved Endymion and bore him fifty daughters. Others, more probably, give him a mortal wife — Asterodia, or Cromia daughter of Itonus, or Hyperippe daughter of Arcas — but all agree he begat Paeon, Epeius, and Aetolus, and a daughter Eurycyda. He set his sons to race at Olympia for the throne; Epeius won, and the people were called Epeans for the first time. His end was disputed between two cities: the Eleans showed his tomb at the end of the Olympic stadium, where the runners' starting-place stands, while the folk of Heracleia near Miletus said he withdrew to Mount Latmus and is honoured there at a shrine of Endymion.4Pausanias — Description of Greece 5.1.3–5.1.5, 6.20.9⚖Told differently in other tellings — change the lens on the card

Apollonius places the love at Latmus: the Titanian Moon, exulting over the fleeing Medea, confesses that she too strays to the Latmian cave and burns for fair Endymion.5Apollonius of Rhodes — Argonautica 4.57–58

Hyginus lists him among the handsomest of youths, loved by Luna — but names him son of Aetolus, reversing the descent the genealogists give, where Aetolus is instead Endymion's son.6Hyginus — Fabulae 271