However, he died in February 1815, of a fall from his horse while hunting on Killiney Hill in County Dublin, and was succeeded as duke by his cousin Charles Sackville-Germain.
However, he died in February 1815, of a fall from his horse while hunting on Killiney Hill in County Dublin. He had no children, so he was succeeded as duke by his cousin Charles Sackville-Germain.