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
George Mackenzie, 3rd Earl of Cromartie 1748. He died on 28 September 1766 in Soho Square, London, having never gone north of the River Trent again, in keeping with the terms of his pardon. He married Isabel Gordon, daughter of Sir William Gordon of Invergordon, on 23 September 1724 and had a large family of young children in 1746. His numerous children, three sons, and nine daughters, were: George Mackenzie, 3rd Earl of Cromartie George Mackenzie, 3rd Earl of Cromartie (c. 1703–28 September 1766) was a Scottish nobleman. He succeeded his father John, the 2nd earl, in February 1731. In 1745, he joined Charles Edward Stuart