Balbilius
Balbilĭus, ĭī, m. , nom dʼh. : Cic. Att. 15, 13, 4.
Balbi'lius
who was in Spain, B. C. 44 (Cic. Att. 15.13), is conjectured by Mongault to be only a diminutive of Cornelius Balbus, the younger, a friend of Cicero's, but this is very improbable.