A plaque on the eastern extension marks the fact that Diana, Princess of Wales, was made a Freeman of the Borough of Northampton in 1989, marking her and her family's strong connections with the town and with Althorp where she was brought up and is buried.
A plaque on the eastern extension serves as a testament to the fact that Diana, Princess of Wales, was granted the status of a Freeman of the Borough of Northampton in 1989, emphasizing her family's enduring relationships with the town and their ancestral estate, Althorp.