Dunham Massey Hall, usually known simply as Dunham Massey, is an English country house in the parish of Dunham Massey in the district of Trafford, near Altrincham, Greater Manchester. During World War I it was temporarily used as the Stamford Military Hospital. It was designated a Grade I listed building on 5 March 1959. It has been owned by the National Trust since the death of Roger Grey, 10th and last Earl of Stamford in 1976. Dunham Massey was re-built in the early 18th century by George Booth, 2nd Earl of Warrington. He had inherited an older mansion from his father, which was in a terrible state of repair. There were significant alterations, especially internally, at the start of the 20th century. It has historic formal gardens and a deer park. The park and gardens are listed Grade II* on the Register of Historic Parks and Gardens. Location Dunham Massey is s an English country house in the parish of Dunham Massey in the district of Trafford, near Altrincham, Greater Manchester. It was formerly in the ancient parish of Bowdon, Cheshire. History 'Old' Sir George Booth, 1st Baronet built the first mansion on the site in the early 17th-century. However, the house remained uncompleted by the time of his death and was only completed after the Civil War in the later 17th century by his grandson, 'Young' George Booth, 1st Baron Delamer. He inherited family debts, and spent a considerable amount of energy investing in the future of Dunham Massey Hall; he planted trees to sell for timber, and worked to recoup unpaid debts. The mansion's service courtyard dates from . The clock tower is inscribed with that date, suggesting that was when improvements were made to the stables. In the 1730s, John Norris was brought in to redesign the whole mansion by the 2nd Earl of Warrington, with a design of brick façade accentuated by bays and a stone centrepiece. George Booth, 2nd Earl of Warrington died in 1758, and in a move remarkable for the eighteenth century, ensured that his only child, a daughter, Lady Mary Booth (1704-1772), would inherit and control the estate. She married her cousin, Harry Grey, 4th Earl of Stamford (1736 - 1768), whose family properties included his estate of Enville Hall. Lady Mary oversaw the remodelling of the landscape at Dunham Massey, some of which, outside the park wall, that was reputedly undertaken