George was born on March 6th, 1766. He died at the age of 73 on March 5th, 1840.
General Notes
5th Duke of Marlborough who obtained a Royal Licence to assume and bear the additional surname and arms of his illustrious predecessor, John CHURCHILL, 1st Duke of Marlborough. He died leaving his eldest son as successor and two other sons as issue. {Burke's Peerage}