The Hudson's Bay Company built a church in Fort William in 1858 for the inhabitants of the area, including the Anishnabe. The church was initially called St. Simions, and was later renamed St. Theresa of the Little Flower Church, and was used by the Anishnabe through 1885. Anishnabe from the area visited the fort to attend church and trade, and many used the burial ground attached to the church. By 1889, all missionary work at Fort William had ceased.

This charming folk art sketch, rendered on a thin sheet of bark, depicts the church around 1900.