2. A.PompeiusBithynicus, son of the preceding, was praetor of Sicily at the time of Caesar's death, B. C. 44, and seems apparently to have been in fear of the reigning party at Rome, as he wrote a letter to Cicero soliciting his protection, which Cicero promised in his reply. (Cic. Fam. 6.16, 17, comp. 16.23.) Bithynicus repulsed Sex. Pompeius in his attempt to gain possession of Messana, but he afterwards allowed Sextus to obtain it, on the condition that he and Sextus should have the government of the island between them. Bithynicus, however, was, after a little while, put to death by Sextus. (D. C. 48.17, 19; Liv. Epit. 123; Appian, App. BC 4.84, 5.70.)

Bithynicus also occurs as the cognomen of a Clodius, who was put to death by Octavianus, on the taking of Perusia, B. C. 40. (Appian, App. BC 5.49.)