To get back to what we often refer to as "guild guns": Most of them, in most major gunmaking countries (cities like Liege, Birmingham, St. Etienne etc) were made by independent outworkers, each doing their own specialized job (stocker, actioner, etc). Some of those same outworkers also did work for major "name" manufacturers, so it gets a little hard to sort out. But a lot of "name" guns were made the same way as the "no name" guns we see from Europe. Same deal, with various outworkers contributing to the product. And the name you see is the name of the "gunmaker" whose shop sold the gun--on which said gunmaker might have done some of the work, or maybe none at all other than arranging to have it made. Vouzelaud, a French gunmaker (now apparently having their guns made elsewhere) used to advertise the fact that they used the best outworkers in St. Etienne to make their very nice doubles. They were just a bit more straightforward and honest about their gunmaking process than were/are many other "makers".