The church graveyard is the burial place of at least two Revolutionary War notables. Colonel Johann Rall, Commander of the Hessians forces defeated by General George Washington. He died just after the Battle of Trenton. John Rosbrugh, was killed at the Battle of the Assunpink Creek (Second Battle of Trenton). He was the first U.S. chaplain killed in battle. The inventor of the steamboat, John Fitch, was a member of the congregation at First Presbyterian.