The Republic of Texas organized Guadalupe County as a judicial county 1/29/1842 including most of what is now Guadalupe and parts of Blanco, Caldwell, Hays, Comal and Kendall counties, but discontinued it later that year when the Texas Supreme Court declared judicial counties to be unconstitutional. In March 1846, after the annexation of Texas to the United States, the legislature established the present county from parts of Bexar and Gonzales counties. Guadalupe County had an area of 862 square miles in 1846 but lost land in 1858 and 1874, when Blanco and Wilson counties were organized. -Handbook of Texas Online: Guadalupe Judicial County, Guadalupe County