[1] He was the elder brother of one of his immediate successors in the consulship, Quintus Servilius Caepio, and the homonymous son of the consul of 169 BC.
[2] During his consulship, he was "placed in charge of the investigation of [Lucius] Hostilius Tubulus [one of the praetors for 142 BC] by the senate", who had become "a byword for accepting bribes while presiding over the quaestio de sicariis".
[4] It is unclear what province Gnaeus Caepio received after his consulship; it is possible he was defeated in Macedonia, but more likely stayed in Italy.
[2] Some time around 138 BC, he joined his brother and some of the Caecilii Metelli in prosecuting his former consular colleague Pompeius for extortion.
[2] Münzer writes in the Realencyclopädie (1942) that Caepio, with a Quintus Metellus, suppressed a slave revolt at Minturnae and Sinuessa as part of an extraordinary command late in 133 BC;[5] Broughton, however, in Magistrates of the Roman Republic (1952) notes no such command.