one of the most intimate friends of the younger Cato, wrote a work on his friend, which is referred to by Plutarch. In B. C. 58 Rufus accompanied Cato to Cyprus, who was charged with the task of uniting the island to the Roman dominion; but he quarrelled with his friend, and returned to Italy in disgust, because Cato would not allow him any opportunity of enriching himself. Rufus, however, in his work on Cato, gave a different account of their quarrel. They were afterwards reconciled by the intervention of Marcia, Cato's wife. (Plut. Cat. Mi. 9, 30, 36, 37; V. Max. 4.3.2.)