Cronus came to power when he castrated his father, Uranus. He and his wife Rhea gave birth to the first generation of Olympians. However, a prophecy said that Cronus would be overthrown by one of his children. To remedy this, Cronus decided to eat his children when they were born. This protected his throne, and it seemed to work for a while until Rhea became frustrated with losing her children.
Rhea came up with a plan to trick Cronus. She replaced their newborn son, Zeus, with a rock. Cronus devoured the rock, thinking it was Zeus, which allowed Rhea time to hide Zeus in Crete.
Once he had grown up, Zeus used an emetic given to him by Gaia to force Cronus to disgorge the contents of his stomach in reverse order: first, the stone, which was set down at Pytho under the glens of Mount Parnassus to be a sign to mortal men, and then his two brothers and three sisters.
After freeing his siblings, Zeus released the Hecatoncheires and the Cyclopes, who forged for him his thunderbolts, Poseidon's trident, and Hades' helmet of darkness. In a vast war called the Titanomachy, Zeus, and his brothers and sisters, with the help of the Hecatonchires and Cyclopes, overthrew Cronus and the other Titans.
Cronus Greek God: Escape To Italy
Cronus escaped to Italy and ruled Saturn. This period became known as the Golden Age on Earth and was honored by the Saturnalia feast. A festival was also held in Athens, honoring Cronus; it was called Kronia, and it took place on the twelfth day of the month Hekatombaion.