I just picked up a Jeffery sidelock shotgun. When I took the locks off and looked at them closely, I see "Joseph Brazier Ashle" stamped or engraved on the inside of the lock plate. I have heard of Joseph Brazier, but what does "Ashle" refer to?

They are what I believe to be back action locks with 3 separate springs - main spring, sear spring and interceptor spring.

Forester