Description: Princess Mary, 9th Duke of Devonshire and party, at the laying of the foundation stone ceremony for the hospital extension, during the visit of HRH Princess Mary, 29 October 1921. Princess Mary, whose full name was Victoria Alexandra Alice Mary, was the Princess Royal, eldest daughter of King George V and Queen Mary (of Teck). This photograph was taken 4 months before her marriage to the 6th Earl of Harewood.