William Prater (Prather), Old Three Hundred pioneer, came to Texas in 1822. He voted in the election of April 1824, which sent the Baron de Bastrop as Texas deputy to the convention of Coahuila and Texas. On July 19, 1824, Prater received title to a league and a labor of land now part of Brazoria and Austin counties. In the fall of 1824 he was living on the Brazos River near Moses Shipman. The census of 1826 classified Prater as a farmer and stock raiser aged over fifty. His household included his wife, Maria, three sons, and a daughter.