The Duke of Northumberland is a title in the British peerage, associated with the historic region of Northumberland in England. The title was first created in 1551 and has been held by various noble families over the centuries. The current Duke, as of 2023, is Ralph Percy, who succeeded his father in 1995. The Duke's family has a long history of involvement in British politics and society. The Duke of Northumberland's official residence is Alnwick Castle, a significant historical landmark and tourist attraction. The castle has been featured in various films and television shows, including the Harry Potter series. The Duke also plays a role in local community affairs and heritage conservation in Northumberland.