A Tribune of the Plebs (Serv. Ad Aen. 1.277), who revealed the secret name of Rome, and soon expiated his offence by death (Serv.; Plin. NH 3.65; Plut. Rom. Quaest. 61; Solin. 1.4; cf. Plin. NH 28.18; Macrob. Sat. 3.9.3 and 5; Lyd. Mens. 4.73). Cichorius identifies him with the scholar whom Pompey put to death in Sicily (Cic. De Or. 3.43; Plut. Pomp. 10.4; see Cichorius Hermes 41 [1906] 59; Niccolini, FTP 430f.). (Broughton MRR II)
As Sumner remarks (Orators 101), Cicero's references to a Q. Valerius of Sora, Brut. 169 and De Or. 3.43, hardly identify him with the tr. pl. in MRR 2.68. See now A. Keaveney, AC 51, 1982, 127- 128, who finds some confirmation in that Valerius's son did not suffer from the penalties Sulla imposed on the children of the proscribed.
(Broughton MRR III)