He died in a hunting accident in 1911, exposing his family to the death duties recently imposed by David Lloyd George's 1909 budget. He left two sons: his successor, the 16th Duke, and Lord Peter Wimsey, the detective; and one daughter, Lady Mary Wimsey. His Duchess, née Honoria Lucasta Delagardie, was the daughter of Francis Delagardie, of Bellingham Hall (or Bellingham Manor), Hampshire.