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(1786-1880), succeeded Mr. Bago as British Minister to the United States in 1820. He returned to England in 1823 and arranged a treaty which was signed by the British and American Commissioners, but was rejected by the U. S. Senate. In 1830 he framed the British claims in the American boundary question which was submitted to the arbitration of the King of the Netherlands. He was afterward famous as Ambassador to Turkey at the time of the Crimean War.