United States Senator Charles Carroll was unique. He was the only Roman Catholic to sign the Declaration of Independence and he outlived all the other signers. At his death, Charles Carroll was considered the wealthiest citizen in America. His statue was chosen to represent the State of Maryland in the U.S. Capitol's Statuary Hall. Charles' cousin, John Carroll, founded Georgetown University and was the United States' first Catholic Bishop. Another cousin, U.S. Rep. Daniel Carroll, was one of two Catholics to sign the U.S. Constitution and gave much of the land where the U.S. Capitol is located. Charles Carroll's nephew, Robert Brent, was the first mayor of Washington, D.C., being reappointed by Jefferson and Madison. In a letter to James McHenry, the signer of the Constitution for whom Fort McHenry was named, Charles Carroll wrote on NOVEMBER 4, 1800: "Without morals a republic cannot subsist any length of time." Carroll continued: "They therefore who are decrying the Christian religion, whose morality is so sublime and pure and which insures to the good eternal happiness, are undermining the solid foundation of morals, the best security for the duration of free governments."