The Duke of Grafton is a title in the British peerage, created in 1675. The title is associated with the House of FitzRoy, a family that descends from King Charles II and his mistress, Barbara Villiers. The Duke of Grafton has historically held significant political influence, with several members serving in various governmental roles. The current Duke of Grafton, as of 2023, is Henry FitzRoy, the 12th Duke. The family seat is Euston Hall in Suffolk, England. The title has been passed down through generations, and the Duke is often involved in charitable activities and local community affairs.