Theseus

During the rest of the time, then, Aethra kept his true birth concealed from Theseus, and a report was spread abroad by Pittheus that he was begotten by Poseidon. For Poseidon is highly honored by the people of Troezen, and he is the patron god of their city; to him they offer first fruits in sacrifice, and they have his trident as an emblem on their coinage.

But when, in his young manhood, Theseus displayed, along with his vigor of body, prowess also, and a firm spirit united with intelligence and sagacity, then Aethra brought him to the rock, told him the truth about his birth, and bade him take away his fathers tokens and go by sea to Athens.

Theseus put his shoulder to the rock and easily raised it up, but he refused to make his journey by sea, although safety lay in that course, and his grandfather and his mother begged him to take it. For it was difficult to make the journey to Athens by land, since no part of it was clear nor yet without peril from robbers and miscreants.