Leto was a female Titan and a favorite lover of Zeus in his early days. While she was pregnant with Zeus' children, Zeus married goddess Hera. As expected, Hera was furious and very jealous of Leto for bearing her husband's children. She did everything in her power to make the life of Leto difficult and tried her best not to allow her to give birth to Zeus' children. She pushed Leto out of Olympus. While Leto was wandering on Earth, no man would open his house for her, fearing the wrath of Hera. On top of that, Hera had the huge serpent Python to chase her. Zeus saved Leto by sending the North Wind, Boreas, to carry her out to the sea. Finally, a desolate, rocky island named Delos accepted her, having nothing to lose. Leto gave birth first to Artemis and nine days later to Apollo. The children would later grow up to become powerful gods and members of the Greek Pantheon. Trained by their mother, they became very skilled archers. However, Hera's vengeance did not end there. She continued tormenting Leto, having Python chase her everywhere. Finally, only four years old, Apollo killed Python in Delphi.