Christian Daniel Claus (1727—1787) was a Deputy Agent in the British Indian Department and a prominent Loyalist during the American Revolution. He was born September 13, 1727, at Bönnigheim, Württemberg the son of and his wife Anna Dorothea. He arrived in America in 1749. In 1755, he was made a Lieutenant in the Indian Department and a Deputy Secretary of Indian Affairs. He had lived with Joseph Brant and the Mohawks for a while and could speak their language. He died November 9, 1787, near Cardiff, Wales.