When Theseus arrived at Athens, he did not reveal his true identity immediately. Aegeus gave him hospitality but was suspicious of the young, powerful stranger's intentions. Aegeus's wife Medea recognized Theseus immediately as Aegeus' son and worried that Theseus would be chosen as heir to Aegeus' kingdom instead of her son Medus. She tried to arrange to have Theseus killed by asking him to capture the Marathonian Bull, an emblem of Cretan power.