In June 1741, several members of the circle, including Windham, joined Richard Pococke in making an expedition to Chamonix.
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They appear to have been the first recorded travellers for pleasure in the region, scaling Montenvers with the aid of local guides and giving the name of "Mer de Glace" to the glacier they subsequently examined.
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Other notable members of the group included Richard Aldworth, the 7th Earl of Haddington and his brother, and Lord Hervey.
William Shakespeare | William Laud | William Blake | William | William III of England | William Morris | William McKinley | William Howard Taft | William Ewart Gladstone | William the Conqueror | William S. Burroughs | William Shatner | William Faulkner | William Randolph Hearst | William Wordsworth | William Tecumseh Sherman | William Hogarth | Prince William, Duke of Cambridge | William Penn | William Jennings Bryan | William Gibson | William Wilberforce | William James | William Makepeace Thackeray | Fort William | William Hanna | William Hague | William III | William Hurt | William Walton |
Notable members of the group included Lord Spencer, Lord Fitzwilliam, William Windham, and Buckingham and Grenville's older brother Thomas Grenville.
de Grey was the third son of Thomas de Grey, MP, of Merton, Norfolk, and Elizabeth, daughter of William Windham.