School: Mecklenburg (North Carolina/NC)
Isaac Thompson was a gunsmith in the Paw Creek section of Mecklenburg County. He was known to engrave a silver inlay in the top flat of a barrel with his full name also with is initials (in script) on other examples. There were two Isaac Thompsons one born in 1780 and another about 1802; it is unknown which was the gunmaker.
Source: Ivey, William. North Carolina Schools of Longrifles 1765-1865. Thomasville, NC: Published by the Author, 2010. Print.