Jacob Painter was born in Burke County, North Carolina, in 1810. He was one of six children of Samuel and Betsy Painter. His parents moved to Lincoln County, Tennesee, in 1813 and to Montgomery County, Illinois, in 1826. The family remained in Illinois until 1831, when they moved to Springfield, Missouri. Jacob was 16 when the family arrived in Illinois, and 21 when they moved to Missouri, so it seems likely that he apprenticed to someone here in Illinois, but just who that might have been, remains unknown.
The History Of Greene County, Missouri (1883) describes Jacob Painter as a miller, blacksmith, locksmith, and gunsmith. It further states that he was the first gunsmith in the county, and that "He was a professional gunsmith, and has turned out thousands of firearms, and gained quite a celebrity for his pistol pattern known as 'Jake's best'. "He made, on the average, two pistols per day, selling them for ten dollars a pair to those outfitting for trips across the plains." It is of course, unusual for gunsmiths during that period to make any number of pistols. It might be within the realm of possibility that Jacob learned the trade from Philip Creamer, while Creamer was working in St. Clair County, Illinois, which lies southwest of Montgomery County, Illinois. Creamer was also well known for making pistols.
The trigger guard on the rifle in the picture, is not of the same pattern used by Dimmick, although it looks similar at first glance.