Mar 9, 2023 · Rhea married her younger brother Cronus, and together they had six children: Demeter, Hades, Hera, Hestia, Poseidon and Zeus. By way of her children's extensive sexual liaisons, Rhea was grandmother to a significant portion of the Greek pantheon, including Ares, Hephaestus, Athena, Artemis, Apollo, Hermes, and Dionysus. Family Tree