The Brazier's of the Ashes, Wolverhampton, were, of course, the best known later lock makers but I don't remember ever seeing a lock with their name on it. I have a Ketland flintlock with the initials BB on the inside and I suspect it may be Benjamin Brazier who appears to be the first of the lock makers...but we have to remember that the references are mostly (or entirely) based on directories. If someone chose not to be listed, he's largely invisible at this point. There was also a family of London gunmakers of that name and I don't know if they were related to the Wolverhampton lock makers. It seems more likely the lock came from a good quality gun by the London family. It was probably still made in the B'ham trade but whether it was made by the famous lock making family is anyone's guess.