Thanks, Fern, for the Google info, but I did Google and found lots of cruises where Barcelona or Rome was a port-of-call but did not find a cruise that originates at Barcelona (or Rome) and ends in Rome )(or Barcelona) - except for that cruise line that appeals to persons on the Forturne 500 list - and we aren't on that list.
I called several of the popular cruise lines, but it was indicated to me that they don't book persons for part of a cruise (from Barcelona to Rome or vice versa) - just the whole cruise.
I thought there might be a "local" shipping company (in Barcelona or the port that serves Rome) that might offer service for passengers from Barcelona to Rome or vice versa.
Thanks for the info!
Most likely we'll fly from Barcelona to Rome!
Thanks for sharing!