Welsh Run, Pennsylvania
Welsh Run is an unincorporated community in [Montgomery Township, Franklin County, Pennsylvania|Franklin County, Pennsylvania|Montgomery Township] in Franklin County, Pennsylvania, United States. Welsh Run is located at the intersection of state routes 416 and 995, southeast of Mercersburg. A large share of the first settlers being natives of Wales caused the name to be selected.
A post office called Welsh Run was established in 1830, and remained in operation until 1906. In March of 1863, Welsh Run "especially received a thorough scouring" by Confederate General Albert Jenkins and his unit of the 8th Virginia Cavalry as they plundered southern Franklin County.