Probably like 1730. I forget when he died, I'm thinkin' 1740-something...don't remember.
Bongarde was one of the most outstanding gunsmiths of all time. His chiseled ironwork is absolutely amazing.
Somebody had a Bongarde half stock gun (most of them are) in an ad in Man At Arms some time ago. Wanted like $1500 for it. If I had the cash, I'd a bought it.