There is confusion over the correct location of Endymion, as some sources suppose that one was, or was related to, the prince of Elis, and the other was a shepherd from Caria—or, a later suggestion, an astronomer: Pliny the Elder mentions Endymion as the first human to observe the movements of the moon, which (according to Pliny) accounts for Endymion's love. As such, there have been two attributed sites of Endymion's burial: the citizens of Heracleia ad Latmo claimed that Endymion's tomb was on Mount Latmus, while the Eleans declared that it was at Olympia.