The Duchess of Northumberland is a title held by the wife of the Duke of Northumberland, a noble title in the British peerage. The current Duchess, Jane Percy, has been active in various charitable endeavors and is known for her work in promoting education and the arts. She resides at Alnwick Castle, a historic castle in Northumberland, England. The Duchess is also recognized for her involvement in the Alnwick Garden, a popular tourist attraction that features beautiful gardens and a treehouse. The garden was developed under her guidance and aims to provide a space for relaxation and education about horticulture and sustainability.