He ate his eldest child.
Hera was born first/swallowed by Cronos before Zeus was born.
the real answer is hades because he was the first born he was the first swallowed bu his dad Cronus and his mom Gaea had other children but Zeus was the last born and his mom discussed him as a rock so when Cronus swallowed the rock Zeus let his brothers an sisters free and threw his dad into tartarus.
It means you did not ask them - you kept your mouth closed and swallowed instead of talking.
Cronus; and Zeus swallowed Metis and thus Athena was born of his head - Aura also swallowed her child.
Cronus!
Hestia was born first (sibling of Zeus, Hera, Demeter, Poseidon and Hades), the daughter of Rhea and Cronus and when as she had been the first swallowed, she was the last to emerge again.
Nothing is particular mentioned in Greek myth to indicate so, but after her birth as the first born she was swallowed by her father Cronus.
Esophagus
Hera had born her,she was swallowed by Zeus and sprung out of him one day
Hestia was born from Rhea, but swallowed by Kronos.
Hestia was born as a daughter of the Titan gods, Cronus and Rhea. When Cronus swallowed his children to prevent them from overthrowing him, Hestia was the first and last sibling he swallowed. Eventually, Zeus, her brother, rescued her and she became one of the twelve Olympian gods.
when a dic got swallowed