Morag Weatherston studied art at Edinburgh College of Art (1964-68) in Scotland, specializing in mural design and tapestry weaving. Following school emigrated to Canada. For a time, she taught art in New Brunswick, before relocating to Prince Edward Island in 1991.

St. Mary's Roman Catholic Church is a large Gothic Revival church built in cruciform shape with a medium pitched roof. The exterior walls are constructed almost entirely of Prince Edward Island sandstone. The church is located on the north side of the Town of Souris overlooking the Souris River. William Critchlow Harris of Charlottetown, who is noted for his work in other island communities, was the architect.