Hi Norma,
Although possibly not of direct assistance to you in your search, but hopefully a thread which may jog someone's memory. Please take a look at the photo believed to have been taken on or just after 10th September 1943 possibly on board the 'Duilio' mis-spelt 'Dvili' in my father Sgt.Thomas Barker's war-time Malta Diaries (published on this website). The photo is believed to be of some of the surrendered Italian crew whilst at anchor outside St Thomas's Bay- the direct link to this photo is:-
I would be very interested to know whether Mr Riboni recognises any of those in the photo! If you would like a higher quality scan of this photo to print out for Mr Riboni, then please let me know via the webmaster.