[4][5][6] 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.

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.

[7] She married her cousin, Harry Grey, 4th Earl of Stamford (1736–68), 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, was reputedly undertaken by Lancelot Capability Brown.

[7] Their son, George Harry Grey, 5th Earl of Stamford and Warrington, inherited both Dunham Massey and Enville Hall, along with other properties.

He died in 1819, and his son, also George Harry Grey, but the 6th Earl of Stamford and Warrington, inherited the estate and began to introduce modernisations to the house.

He married twice, first to Elizabeth (Bessie) King Billage, a shoemaker's daughter from Cambridge; the second to Catherine Cocks, a circus performer.

However, the local gentry rejected his choices of wife, which led him to leave Dunham Massey and move to Enville Hall.

The house was managed by Robert Cox, Catherine's nephew, and rented to tenants for periods in the subsequent fifty years.

[7] The house was modified in 1905–1908 by architect Compton Hall, and by interior designer Percy Macquoid, in preparation for its reoccupation by William Grey, 9th Earl of Stamford.

It hosted 182 injured soldiers who had suffered injuries and needed medical care, but not life-threatening, ranging from gas poisoning to bullets in the brain.

[14][15][16] From 1 March 2014 until 11 November 2016, the main ward at Stamford Military Hospital (known as "Baghdad"), along with the operating theatre, nurses' station and the recreation room were recreated to commemorate the 100-year anniversary of the start of World War I,[15] along with actors playing the role of characters who worked, lived and recovered at the hospital.

[17] The 10th Earl, Roger Grey, expended much money and effort in returning family heirlooms originally from Dunham Massey.

[19] A life-sized statue of an exoticised black man wearing only a skirt of feathers, in a kneeling position and holding a sundial above his head, was previously situated at the front of the house.

It is believed to have originally been a personification of Africa, produced by the sculptor Andries Carpentière in c. 1735 after a figure by John van Nost for King William III's privy garden at Hampton Court.

[23] The double courtyard house is built of Flemish bond brick, stone dressings, and a roof of Westmorland and Welsh slate.