Rancher S.G. Umbarger founded the town that bears his name in the late 1890s, but it was a group of German settlers – including influential Catholic priest Father Joseph Reisdorff – who began to grow the town between 1902 and 1920. German-Catholic families founded St. Mary’s Catholic Church – originally called Mariankirche – in 1909. Services are still held at St. Mary’s, which preserves its German-Texan heritage.
Although most are located in Central Texas, in 1983 St. Mary's received designation on the National Register of Historic Places as one of Texas' famous painted churches.