Wynnewood is a suburban unincorporated community west of Philadelphia that straddles Lower Merion Township (Montgomery County, Pennsylvania) and Haverford Township (Delaware County, Pennsylvania). The community was named in 1691 for Dr. Thomas Wynne, William Penn's physician and the first Speaker of the Pennsylvania General Assembly. Wynnewood is one of many neighborhoods on the historic Philadelphia Main Line, and is the home of institutions such as Lankenau Medical Center, St. Charles Borromeo Seminary, Palmer Theological Seminary, All Saints' Episcopal Church, and Friends' Central School.