Hera continued her persecution of Heracles, and when he was eight months old sent two snakes to his bed which the baby Heracles strangled.
When he was grown, Heracles married Megara, a daughter of Creon, but later, driven mad by Hera, he killed her and their children. Inquiring of the oracle at Delphi, he was told to serve his cousin Eurystheus, ruler of Tiryns and Mycenae. It was Eurystheus who sent Heracles upon the famous twelve labors.