James Simpson was a Quaker minister who spent most of his life near the conjunction of Philadelphia, Bucks, and Montgomery Counties in Pennsylvania. He was born in 1743 to John and Hannah Simpson of Bucks County. His father died when he was around 3 years old. Over the course of Simpson's life he pursued careers as a cooper, storekeeper, and maker of brushes and brooms. In 1789 he moved to Horsham, Pennsylvania, and a year later he married Martha Shoemaker. Simpson died on April 9, 1811, at Frankford, Pennsylvania.