This man who was married to Elva,was a musician but he is more famous for his 1940 s invention
which involves a number of colourful characters , the invention was partly inspired by this mans love of the work of Agatha Christie. The man died at the age of 90 and is buried in a Worcestershire cemetery.What was the mans middle name? Frank, joseph, Ernest, Gerald or Kenneth. Many thanks in advance if anyone can help.