Nelson originally formed as the Cedar Fork community, centered around the Cedar Fork Baptist Church, which was established in 1805. From 1860 to 1866 a post office operated there under the name of Cedar Fork, and in 1882 a post office operated under the name of Llewellyn.
Nelson began as the Cedar Fork community, which was founded around the Cedar Fork Baptist Church in 1805. From 1860 to 1866, there was a post office named Cedar Fork, and another one named Llewellyn operated from 1882.