Five families withdrew from Liberty Hill Baptist Church to form an independent missionary Baptist church of Christ in 1888. The Rev. G.W. Capps was called as the first pastor. A one room schoolhouse was soon erected on donated land. Housing worship services of all denominations, the school was called the Union Hall. The community and the church both took the Union Hall name. A new sanctuary was built in 1924, and the church supported many missionary activities over the years. Baptisms were held in the South San Gabriel River.