When Cronus, the Greek mythologial figure, learns that he was destined to be overthrown by one of his children like his father was before him, he swallowed all the children Rhea bore as soon as they were born.

When Rhea had her sixth and final child, Zeus, she spirited him away and hid him in Crete, giving Cronus a rock to swallow instead, thus saving her youngest son who would go on to challenge his father's rule and rescue the rest of his siblings.