In ancient Greek religion, Hera is the goddess of marriage, women, and family, and the protector of women during childbirth. In Greek mythology, she is queen among the twelve Olympians on Mount Olympus, sister and wife of Zeus, and daughter of the Titans Cronus and Rhea. One of her defining characteristics in myth is her jealous and vengeful nature in dealing with any who offended her, especially Zeus's numerous adulterous lovers and illegitimate offspring.