Mullenix (Sullivan), Beriah Frazier (Knox), Wilson Duggan (Sevier), Charles Inman (Sevier), and Stephen Matthews (Blount). Samuel R. Rodgers, a Knox delegate, served as Speaker of the Tennessee Senate, and William Heiskell, a Monroe delegate, served as Speaker of the Tennessee House of Representatives. The Unionist-dominated state government was bitterly divided during the postwar period between Conservative Republicans, allies of Andrew Johnson who preferred a return to a prewar state of affairs (though with emancipation intact), and the Radical Republicans, allies of Brownlow who sought civil rights for blacks and retribution against former Confederates. Conservatives, badly outnumbered, used parliamentary tactics such as quorum busts to thwart Radical initiatives, leading to frequent showdowns in the House and Senate. In spite of these divisions, the state government ratified the Thirteenth and Fourteenth amendments to the U.S. Constitution, allowing Tennessee to become the first former Confederate state readmitted to the Union in 1866. Dewitt Clinton Senter, who had been a member of the Convention's Grainger County delegation, succeeded Brownlow as governor, and initiated efforts to restore the rights of ex-Confederates. At the state's 1870 constitutional convention, which wrote its current constitution, former East Tennessee Convention delegate John Baxter led the committee that drafted the document's Declaration of Rights. Former delegates William B. Carter, John Netherland, and William B. Staley (of Roane County) were also at the constitutional convention. Numerous East Tennessee Convention members would win election or appointment to higher offices. Following his term as governor, Brownlow served a term (1869–1875) in the U.S. Senate. David T. Patterson, a Greene County delegate, also served in the Senate (1866–1869). Leonidas C. Houk (Anderson), William Crutchfield (Hamilton), William McFarland (Jefferson), Roderick R. Butler (Johnson), and Horace Maynard (Knox), would serve in Congress, and Maynard would serve as U.S. Postmaster General. Baxter and Connally Trigg, both of Knox, served as federal judges, James W. Deaderick (Washington) served as Chief Justice of the Tennessee Supreme Court, and several former delegates, including Oliver Perry Temple (Knox), David K. Young (Anderson), and Daniel C. Trewhitt (Hamilton), served as lower state court judges. Thomas William Humes, who delivered the sermon at the East Tennessee Convention's initial session in May 1861, served as president of East Tennessee University after the war, and oversaw its transition to the University of Tennessee in the 1870s. John J. Craig, a member of the Knox delegation, was instrumental in the development of the Tennessee marble industry