Just a thought. The little film I referred to ('Village of Violins') which featured David's apprenticeship in Mittenwald was released in 1960. David would have been around 20 at the time, meaning he was born c.1940. It would also mean he was around 40 when I met him in the shop in Birmingham, which seems correct from my recollections (seemingly way older than me, but younger than my father). So he will be 86 now, perfectly possible, but be prepared for disappointment. It might be worth getting in touch with Jan Kudanowski though I'm sorry I don't have his email - but the violin making school in Cambridge might, as he taught there. I think Jan took the use of the Sydney Evans name in the 1990s, probably when David wanted to retire. Good luck and please let me know if you do find David, as I owe him a lot; he got me started in bow making and was always patient and kind.