Theseus Athens Great Hero At birth Theseus an unknown father. His mother , Aethra , was friendly with both Poseidon and Aegeus (Hunt 3-6). Before Theseus was born Aegeus said to Aethra ." If we are to have a son , when he is grown have him take my sword and sandals from under this boulder to me ," then he was off to Athens. Theseus was born in a small town called Troezen and grew up there, in a normal way. When Theseus was old enough Aethra took Theseus to the boulder where the sandals and sword were and told him what Aegeus had said. Theseus lifted the giant boulder with ease and immediately wanted to go to Athens. He i