Rhea married Kronos, to whom she bore three daughters and three sons: the great goddesses Hestia, Demeter and Hera, and the great gods Hades, Poseidon and Zeus.
Kerényi establishes Rhea's foundational genealogical function as mother of the entire Olympian pantheon, situating her as the pivotal Titaness through whom divine sovereignty passes to the next generation.
, The Gods of the Greeks, 1951thesis