Chatham House Chatham House The Royal Institute of International Affairs, commonly known as Chatham House, is a not-for-profit and non-governmental organisation based in London whose mission is to analyse and promote the understanding of major international issues and current affairs. It is the originator of the Chatham House Rule and takes its name from the building where it is based, a Grade I listed 18th-century house in St James's Square, designed in part by Henry Flitcroft and occupied by three British prime ministers, including William Pitt, 1st Earl of Chatham. In the University of Pennsylvania’s rankings (announced in January 2017) for their
Earl of Wilton Thomas Egerton, 1st Earl of Wilton died in 1814, the Grey de Wilton barony became extinct as he had no male heirs, while the Grey Egerton baronetcy passed to his kinsman John Grey Egerton (1766–1825), who became the 8th Baronet. The titles of "Earl of Wilton" and "Viscount Grey de Wilton" passed, according to the special remainder, to the 1st Earl's grandson Thomas Grosvenor (1799–1882), who adopted the surname of Egerton and became the 2nd Earl. He was the second son of Lady Eleanor and the first Marquess of Westminster, the younger brother of Richard Grosvenor, 2nd Marquess of Westminster