sentences:  The name was taken from that of the Free Union Church, which had been built in 1837 and is still operating as the Free Union Baptist Church.The church was "free" in that all races were welcome to worship there, and it was a "union" of four denominations of Christianity, none of which could have afforded a church of their own at that time.Free Union continued to be known as Nixville until the early 20th century, when the post office's name caught on.