The water-poweredgristmill was built around the year 1690 by Edward Farmar. Farmar's father was a British army officer living in Ireland who had purchased a 5,000-acre (2,000 ha) parcel of land in Pennsylvania from William Penn. This tract contained most of what is present-day Whitemarsh Township. Farmar's father died before he could move his family to America, but his mother brought the family to America in 1685, settling in the area of present-day Fort Washington.
Farmar Mill was the original terminus for Skippack Pike, which was established in 1713.[2] By 1722, a road also existed from Farmar Mill, through the village of Three Tuns, to Richard Saunders' ferry, on the Neshaminy Creek (later the village of Bridge Point, now Edison) in Bucks County.[3]
In 1740, Quaker businessman Samuel Morris bought a one-half interest in the mill, and bought the remaining half interest after Farmar's death in 1746. During the period of 1743 and 1748, Morris was building his country mansion "Whitemarsh Estate" (later known as Hope Lodge) a mere stone's throw from Farmar's Mill.[4] After Morris' death in 1770, his brother Joshua sold the mill and 4 acres (16,000 m2) of land to Isaac Mather, whose son Joseph built the present mill in 1820.[5]