Mutual friends of Antony and Octavian, sent by the latter to Antony just before the outbreak of the Perusine war. They met with Antony in Phoenicia in the spring of 40, and Cocceius remained with him while Caecina returned (App. BC 5.60). On Caecina, note L. Caecina L. f. (CIL 12.2.2515, PIR² 2.17, no. 96) as a possible identification. (Broughton MRR II)
A group, whose journey to Brundisium with the poets Horace, Vergil, Varius, and Plotius, and the rhetor Apollodorus (Heliodorus) in their company is described by Horace (Sat. 1.5; in the spring, see lines 10-15 on the frogs). Their mission preceded the meeting of Antony and Octavian at Tarentum (see Porphyr. on Hor. Sat. 1.5.27, who errs regarding the date and the destination). See De Laet no. 119, on Cocceius; above, on Fonteius. (Broughton MRR II)