[3] The Trappe area was settled in 1717 by Germans who worshipped informally or under itinerant preachers until the arrival of Heinrich Melchior Mühlenberg in 1742.

All of the interior fittings were fabricated from local materials, including the pulpit, which is made of American black walnut.

Above the south entrance is a date stone inscribed in Latin with the names of the church's founders, including Henry Melchior Muhlenberg, Frederick Marsteller, John Nicholas Cressman, Anthony Heilman (Hallman), Jacob Miller, Henry Haas, and George Kebner.

A monument at the west end of the church commemorates unknown Revolutionary War soldiers buried in the cemetery.

In the late 1950s, services were once again held in the Old Church in the summer and on Christmas Eve, a tradition which continues to the present day.