Among the earliest relics of the Scots Presbyterians is this stone meetinghouse that served the original families of Harrisburg, including John Harris and William Maclay, both of whom are buried in the churchyard. The round-arched windows and door centered on the side are evident of the early date and mark the immediate spread of English Georgian forms to the frontier. The building was restored by Okie, who added the anachronistic slate roof and interior finishes.