Cronus, the titan, who is often picture as our modern-day father time, fathered six children with his sister, Rhea. Above, she is pictured handing one of their children to Cronus, whom he will promptly swallow. (Cronus' father, Uranus, cursed him to meet the same fate as he: murdered by his own son.)
Eventually, Rhea gets tired of her children being eaten, and she sends her youngest son, Zeus, off to live as a mortal. Eventually, she finds him later and tells him to poison his own father. Cronus eventually spits up all five children he has swallowed, and then was thrown into Tartarus by his sons.