Lord Stamford and Warrington married twice, producing no children; firstly in 1848 to Elizabeth King Billage and secondly in 1855 to Catherine Cox the daughter of Henry Cox Esq. After inheriting his family's large estates at Enville in Staffordshire, Bradgate Park in Leicestershire and other Leicestershire estates, Dunham Massey in Cheshire, and Stalybridge in Lancashire, he commissioned the building of St Margaret's Church at Dunham Massey in 1851. Built in honor of his sister, Lady MargaretMilbank, the church was completed in 1855. He was patron of several advowsons in addition to lordships of manors. Following his second marriage to Catherine Cox, the Earl commissioned the architect, Mr. M.J. Dain of Dain and Parsons, London, to design a hall for him to replace the old hunting lodge the Grey's used in the village of Groby, Leicestershire during the hunting season, which was named Bradgate House. Built by local builder Thomas Rudkin, Bradgate House was completed in 1856 and was built in the Jacobean style. It has been referred to as the Calendar House because it had 365 windows, 52 rooms, and 12 main chimneys. Groby. In 1860, twelve farms of his land at Bradgate were submerged to form Cropston Reservoir. In 1879, he donated of his land at Stalybridge to the local council as a public park and sold further land for housing development. On his death at Bradgate House in 1883, the earldom of Warrington became extinct. His other two titles passed to his third cousin once removed, The RevdHarry Grey, 8th Earl of Stamford, who was living in Cape Colony. He left his estates to his widow for life, who was then styledDowagerCountess of Stamford and Warrington, and on her death in 1905 they were divided. The Dunham Massey estate went with the earldom; the Leicestershire estates passed to his niece Mrs Arthur Duncombe, and the Enville estate was inherited by the Dowager Countess's grandniece Catherine, wife of Sir Henry Foley Lambert. The land at Stalybridge was left equally between Mrs Duncombe and the Earl of Stamford and Warrington's niece and Lady Lambert the grand niece of Catherine, Countess of Stamford and Warrington, whose descendants settled its division in 1959. Mrs Duncombe sold the Leicestershire Estates in 1925, which included the village of Groby and also the Jacobean style hall the Earl of Stamford and Warrington commissioned at Groby and was completed in 1856. Bradgate House was demolished in 1926. Only the magnificent stable block survives, albeit in a ruinous and dilapidated condition, which had been built on a lavish scale for the 7th Earl of Stamford when he was made Master of the Quorn Hunt in 1856.