Judge Richard Gergel of Federal District Court on Wednesday struck down South Carolina’s same-sex marriage ban as unconstitutional, but gave the state a week to appeal to the United States Court of Appeals for the Fourth Circuit, in Richmond, Va. Attorney General Alan Wilson said he would do so. The Fourth Circuit already has struck down Virginia’s same-sex marriage ban, a ruling that applied to other states in the circuit. The United States Supreme Court refused to hear an appeal of that case last month, and South Carolina is the only state in the circuit that has refused to allow the marriages.