You'll need to be a little more specific. Are you talking about in the world? The USA?
Sheridan started in 1945. Later it was purchased by Benjamin air gun company and Later Benjamin was purchased by Crosman air gun company. It is still in production.
Tommy gun
Franchi LF-57 is an Italian submachine gun manufactured by the Italian gun company Luigi Franchi S.p.A.
Wilmot Gun Company was a trade name made by Henri Pieper in Belgium c. 1877-1914.
Daisy started in 1895.
Heckler and Koch is the company the produces the MG4 light machine gun. This German company developed this gun in the late 1990's but displayed it to the general public in 2001.
The name American Gun Company was a trade mark of the Cresent Firearms Company.This company was in business from 1888-1931.The double barrel shotguns of this company were started in the year 1891.The Knickerbocker shotgun was started during the 1900,s.The knickerbocker shotguns were of a barrel length of 14 inches and chambered in 20 gauge.The barrels should be of nickel finish.A case hardened receiver,and pistol grip stock.
The first gun was made about 1000 years ago, and we have very little information. If it HAD a name, the name would be been Chinese, since it was made there.
Armory Gun Co is the trade name used by H&D Folsom Arms Co on Shotguns. Later sold to Savage Arms around 1930.
Bridge Gun Company never existed. It was a trade name used by Shapleigh Hardware of St Louis on guns made by Crescent, Harrington & Richardson, Stevens, and several Belgian gun makers. The last gun with this name was probably made about 50 years before there was an internet.
You will have to state whether you are talking about and individual or a company.
Smith & Wesson is a well known firearms manufacturer based in Springfield, Massachusetts, USA. The company was formed by Horace Smith and Daniel B. Wesson. The first weapon the two men produced was a lever-action pistol in 1852, although their company was known as The Volcanic Repeating Arms Company. The first gun produced under the name Smith & Wesson was the Model 1 in 1856.