Church of the Holy Trinity (Churchville, Maryland)  Church of the Holy Trinity, or Holy Trinity Episcopal Church, is a historic Episcopal church located at Churchville, Harford County, Maryland. It is a stone structure built in 1878 in the Gothic Revival style. Its front facade features a triple window of stained glass, consisting of three Gothic-arched lancet windows It also features a steep roof, an architectural chancel at the east end, south porch and sacristy, belfry at the west end, and lancet windows and doors with pointed arches. It was listed on the National Register of Historic Places in 2002.