5. L.Tullius, a legate of Cicero in Cilicia, owed his appointment to the influence of Q. Titinius, and probably also of Atticus, whose friend he was. His conduct, however, did not give satisfaction to Cicero. (Cic. Att. 5.4, 11, 14, 21.) In one of Cicero's letters (ad Fam. 15.14.8) we read of his legate L. Tulleius, which is probably a false reading for L. Tullius.
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890