John Penn (1760–1834), son of Thomas Penn, grandson of William Penn, and a first cousin of John Penn of Lansdowne, returned from England to Philadelphia in 1784 and built a home, The Solitude, on the west bank of the Schuylkill, later incorporated into Fairmount Park. Penn probably also had a house in town. He returned to England in 1788, where he promoted philanthropic causes, including the Outinian Society to promote matrimony, although Penn himself died a bachelor (see SNYDER description begins Martin P. Snyder. City of Independence: Views of Philadelphia before 1800. New York, 1975. description ends , 131–32).