Hi Louise,
May I sound a note of caution here? A friend of mine acquired a DFC at an auction and, being an enthusiastic RAF researcher, decided to try and trace the person to whom the medal was awarded. After quite a bit of effort he succeeded and called on the person concerned. He was not welcomed and was told to mind his own business and not interfere in other people's lives.
Whilst I'm not advocating that you should abandon your search, just be aware that the result may not be all you hope for.
Best wishes.