Well the The Green Dragon was The Green Dragon Hotel although it is now The Kinver Constitutional Club.
It was purchased in 1937 or 1938 from Julian Hanson & Sons Brewery of Dudley.
The club celebrates its 75th Birthday this year.
There is a record of impending Bankrupcy published here
http://www.london-gazette.co.uk/issues/ ... 4/page.pdfof one
William Henry Baker who I imagine was the owner of the premises at that time.It's probably safe to assume that Julia Hanson
& Sons purchased or acquired the property as a result of those proceedings.
Before going further it would be helpful to know your ancestors NAME and the DATES he was involved with the premises.
Julia Hanson & Sons was purchased by Banks's Brewery in 1943 and Bank's subsequently became Marstons Brewery.
I know that Marstons hold a considerable amount of historic data so it's possible that they might have some specific records
so try here
http://www.marstonsbeercompany.co.uk/br ... ampton.asp.
Good luck!