Thank you for your comprehensive reply. It is very much appreciated. I will look on the Archives website which I haven't searched yet. We know it is like looking for a needle in a haystack without a name but we keep trying.
5 years ago when we found out (through a genealogy DNA test) an elderly aunt told us about her wedding in 1944 but sadly she has since died. It was obviously a well kept family secret. We have tried every avenue in Cornwall even going on the radio and having the story printed in a local paper but to no avail. This is why we are trying to find out which units left in the area. The aunt told us he was called Joey (weren't they all!!) We have been to the Cornish Studies Library and read as many books as we could on the subject but there is lack of detail. I do have 6 names of Naval Personnel in the area in August 1944 so I will look on the Navy Muster Rolls for those but if this man is land based I don't think they are on Ancestry. I have traced some of the ships through Ancestry but it is frustrating that land based personnel do not seem to be there.Do you know if the Supply Corps would have come in by ship so may be on the muster rolls? We know nothing about the US Navy. Many thanks for your interest.