Jamieson, Fausset and Brown on Acts 13:7

7. Which was with the deputy--properly, "the proconsul." This name was reserved for the governors of settled provinces, which were placed under the Roman Senate, and is never given in the New Testament to Pilate, Felix, or Festus, who were but procurators, or subordinate administrators of unsettled, imperial, military provinces. Now as Augustus reserved Cyprus for himself, its governor would in that case have been not a proconsul, but simply a procurator, had not the emperor afterwards restored it to the Senate, as a Roman historian [Dio Cassius] expressly states. In most striking confirmation of this minute accuracy of the sacred historian, coins have actually been found in the island, stamped with the names of proconsuls, both in Greek and Latin [Akerman, Numismatic Illustrations of the New Testament]. (Grotius and Bengel, not aware of this, have missed the mark here).

Sergius Paulus, a prudent man--an intelligent man, who thirsting for truth, sent for Barnabas and Saul, desiring ("earnestly desiring") to hear the Word of God.