John Gill Commentary Acts 10:1

"Now [there was] a certain man in Caesarea, Cornelius by name, a centurion of the band called the Italian [band]," — Acts 10:1 (ASV)

There was a certain man in Caesarea This was the Caesarea formerly called Strato's tower, not Caesarea Philippi; for the former, and not the latter, lay near Joppa:

called Cornelius; which was a Roman name, and he himself was a Roman or an Italian:

a centurion of the band called the Italian band; which consisted of soldiers collected out of Italy, from whence the band took its name, in which Cornelius was a centurion, having a hundred men under him, as the name of his office signifies.