No, she was his sister.
She was a wife of Zeus and mother of Hercules.
The mother of Zeus was Rhea, she was also mother of Hestia, Hera, Demeter, Hades, and Poseidon by Cronus.
Hestia's mother is Rhea, the Titan. Her father was Conus. Her sisters included Demeter and Hera. Her brothers included Poseidon, Hades, and Zeus.
Hestia's siblings are Zeus, Hades, Poseidon, Demeter, and Hera. Her father is Cronus, and her mother is Rhea.
Hestia is the sister of: Hera, Demeter, Zeus, Hades, Poseidon, her mother is Rhea and her father Cronus - both Titans. Hestia had no children.
Poseidon's mother was the titan Rhea. Her other children were Zeus, Hades, Demeter, Hera, and Hestia.
Poseidon's mother was the titan Rhea. Her other children were Zeus, Hades, Demeter, Hera, and Hestia.
Zeus liked Hestia because she did not cause problems for him.
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No, Zeus and Hestia never had a child. Hestia was the virgin sister of Zeus. Zeus had children by both his other sisters, Demeter and Hera - only Hera he married.
Hestia is Zeus's older sister. She is the oldest of Cronus's children.
Zeus has three sisters: Hera (who is also Zeus' wife), Hestia and Demeter.