The church was served by itinerant missionary priests for the first twenty-four years of its existence.

In the 19th century, the church basement hosted a school where children from the area learned to read and write in German while also receiving religious education.

The students were taught by Sisters of St. Agnes, whose order was founded in the Village of Barton, Wisconsin.

Originally, the inside of the church had whitewashed walls, but in 1925, the congregation commissioned Milwaukee artist Hans Schmeidl to paint a depiction of St. Augustine behind the altar, flanked by bordered medallion paintings of Mary and Jesus.

[2][3] Media related to St. Augustine Catholic Church (Trenton, Wisconsin) at Wikimedia Commons