the son of Procas king of Alba, and Numitor the brother of Amulius. Procas before his death made him and Amulius joint heirs to the crown, on condition of their reigning annually by turns: but Amulius, on getting possession of the throne, excluded Numitor, whose son Lautus he ordered to be put to death, and obliged Rhea Sylvia, Numitor's only daughter, to become a vestal. This princess becoming pregnant, declared that she was with child by the god Mars; and afterwards brought forth Rhemus and Romulus, who at length killed Amulius, and restored Numitor to the throne, 754 B.C. See Rhemus and Romulus.