Hi Fred,
Been searching for birth records in Genoa 1815. The Archives jump a few years and 1815 is not there. Had a look at "Familysearch". Nothing, but they say old church records are hard to find and very few are online. Had a look at churches in the districts of the old town and Molo di Genova is not shown.
Just curiosity: do you know when he came to the UK, when he was married? What do earlier/later UK census show as place of birth.
Steve