sentences:  He continued his parliamentary career from 1830 to 1832, inherited his father's title as 4th Earl of Mornington in 1845 and died in humble lodgings in 1857.The remnant of the manor of Wanstead was inherited by his son William, who had been protected from his father's designs on his maternal inheritance by the intervention of the Duke of Wellington, and he left it in trust for his father's cousin Henry Wellesley, 1st Earl Cowley.In 1880 the Earl sold of the former house's grounds to the Corporation of London for preservation as a part of Epping Forest, and the resultant new municipal park of Wanstead was officially opened by the City of London Corporation in 1882.