Poseidon (Neptune) is the god of the sea, of earthquakes (he was 'the Earth-shaker'), and of horses — the animals he is said to have created [S1][S2]. Brother of Zeus and Hades, he received the sea when the world was divided [S1]. His rivalry with Zeus for supremacy runs through much of the Iliad, where he is a major (though restrained) actor [S2]. He contested Athena for the patronage of the city that bears his rival's name: he struck the rock and sent forth a salt spring (or, in some accounts, a horse); Athena gave the olive tree, and the city chose her [S5][S6]. He is a father of many — to gods, heroes (e.g. the hero Theseus's divine father is Poseidon in one tradition), and sea-creatures; his most famous confrontation with a mortal is his blinding of Odysseus's son Telegonos and his anger at the blinding of his son the Cyclops Polyphemus by Odysseus [S3].