Union Grove was probably first settled before the Civil War, but a community did not grow up until later. In the mid-1930s the small settlement had a church, a sawmill, and a number of houses. After World War II many of the residents left the area, but in the 1990s the church, a cemetery, and a few scattered dwellings still remained. Source: Handbook of Texas Online
Union Grove Cemetery. On Sept. 25, 1887, local residents met in the old stone schoolhouse to organize Union Grove Missionary Baptist Church with 12 charter members. In 1905, T. W. and Laura Marshall, and J. J. and Mattie Suber donated land to trustees Arthur O’Neal and L. C. Shuttlesworth for the church and cemetery. The oldest marked graves, for Jesse Richard Thompson and Mary Ann (Worley) Richardson, date to 1904. Other burials include those of Confederate veteran Albert Green Pullium (d. 1918) and veterans of World Wars I and II, and the Korean Conflict. The present church building dates to 1924.
A cemetery association formed in 1972 oversees maintenance and homecoming activities on the Sunday of Memorial Day weekends. Recent changes to the historic cemetery include a pavilion and enlargement of the property with an additional donation of land.
For more than a century, families and local residents have gathered here to remember, to worship, to pay respects to those of the past and to visit with loved ones. Union Grove Cemetery serves as an important historical reminder of the role churches and burial grounds play as centers of rural communities. Historic Texas Cemetery – 2004. – Historical Marker Text. Marker erect 2004. Located 2.4 mi. E on FM 15 at CR 2161.