Texas pioneer Emory Rains served as an alcalde under Mexican rule and as a counselor in the East Texas Regulator-Moderator War of the 1840s. As a senator in the Republic of Texas Congress, he helped pass the Homestead Act. Rains also served in the 1845 Constitutional Convention and in the State Legislature, where he worked for the formation of this county, which was named in his honor. The Rains County Seat, Emory, was also named for him.