Kronos

Saturn was the husband of Rhea. Long before the 1st century BC, he defeated Rhea after he had swallowed all but one of his children.

In the 1st century BC, he tried to incite Roman slaves to rebellion during Saturnalia. Rhea, in the form of a little girl, used the Seventh Doctor and Ace to help her defeat him again. (PROSE: The Best of Days)