School: Lancaster (Pennsylvania/PA)
Mathias Roessor (Roeser) was listed as a gunsmith in the 1759-1770 circa. He was one of the patriarchs of the Lancaster school of gunbuilding. A memorial plaque was erected by the Commonwealth in 2000 in Lancaster which reads: Mathias Roeser…Here from 1740-1771 lived one of colonial America’s most important gunsmiths. His work was central to the development of the Pennsylvania rifle. Other family members, and an apprentice, William Henry, Sr., became leading gunsmiths and supplied arms to the patriot cause in the Revolution.”
