I think this website might help you with locating a Cooper family.
www.romanygenes.webeden.co.uk
If it's the same Cooper family I'm thinking about, then my Hughes family knew them when they lived in the New Forest, or to be precise the Nevi Wesh!
The website has helped me a heck of a lot, and I've got this funny feeling that they've actually got photos of Sandy Cooper and his family, too.
Anyway, good luck with it, Sally