Earl Percy is a title in the British peerage, associated with the Percy family, one of the oldest noble families in England. The title was created in 1766 and is linked to the historic Northumberland region. The current holder of the title is known as the Duke of Northumberland, as the Earl Percy is a subsidiary title. The Percy family has a rich history, dating back to the medieval period, and has played significant roles in English politics and military affairs. The family seat is Alnwick Castle, a historic fortress that has been a residence for the Percys for centuries and is a popular tourist attraction today.