CIL 12.2.667, 958, 959; Cic. Cat. 1.15; Sull. 11; Sall. Cat. 18.2; Ascon. 59 C; Dio 36.42.3; Chr. 354 (Lepido et Tullo); Fast. Hyd. (Bulcacio et Tullo), so also Chr. Pasc.; Cassiod. (An-, or Cn., Lepidus), on Lepidus, Ascon. 79 C; and on Volcatius, Ascon. 28 C. See Degrassi 131, 488f. Volcatius refused to accept the candidacy of Catiline for the consulship of 65 (Ascon. 89 C). (Broughton MRR II)
Cos. 66. Wiseman remarks that this Volcacius can hardly be considered a novus homo in view of the long interval, which Cicero notes (Leg. Agr. 2.3), without novi before his own consulship. We must assume that some ancestors of this consul had senatorial rank (Wiseman, NM 276, no. 506). The name of the gens should be spelled Volcacius.
(Broughton MRR III)