From Virgil M. Dowdall's 1968 supplement to Perrin's History of Cass County:
"Father Heimerling visited Arenzville in the year 1859 and made plans to visit the new parish regularly for the seven families situated there. It is probable that he attended it from Beardstown. From 1866 to 1868, the people at Arenzville were without Mass. From 1868 to 1873, Mass was said about three times a year and then on week days only. In 1882, a few Catholic members arrived from Germany, including one Valentine Hahling, who proved to be a very valuable addition to the church. He was instrumental in buying a home, consisting of two rooms, which was situated on the site of the present church. This building, used as their place of worship until outgrown, was replaced by the present church, which was dedicated on October 13, 1899."
At the present time, the pastor of St. Alexius Catholic Church in Beardstown is assigned to minister to St. Fidelis. Father Christopher J. Brey is the present pastor.
The schedule for the celebration of the Mass varies (currently held at 6:30 pm on the first Saturday of the month and at 8:00 am on the last Sunday of the month). Call for information about services on Holy Days: 323-4345.