In ancient Greek religion, a daughter of the Titans Cronus and Rhea, sister-wife of Zeus, and queen of the Olympian gods. The Romans identified her with their own Juno. Hera was worshiped throughout the Greek world and played an important part in Greek literature, appearing most frequently as the jealous and rancorous wife of Zeus and pursuing with vindictive hatred the heroines who were beloved by him. From early times Hera was believed to be the sole lawful wife of Zeus.