I. Augustus, viscount, an English admiral, son of the second earl of Albemarle (a title conferred in 1695 on Arnold Joostvan Keppel, lord of Voorst, a Dutch general who accompanied William of Orange to England in 1688), born April 2,1725, died in Suffolk, Oct. 2,1786. He entered the navy in 1740 under the auspices of Lord Anson, with whom he circumnavigated the globe. In 1744 he became a post captain, and for many years rendered important services as commander of single ships or of squadrons, being almost uniformly successful in the expeditions he undertook. In 1762 he was made rear admiral of the blue; and in July, 1778, being then admiral of the red, and in command of a large fleet of ships of the line, he had an indecisive conflict with the French squadron under D'Orvilliers off Ushant. The British fleet having hauled off to repair damages, a signal was given by the admiral to renew the battle; but the failure of Sir Hugh Palliser, who commanded the rear, to obey it, enabled the French to escape. Palliser subsequently brought articles of accusation against Keppel, which upon investigation by a court martial were declared unfounded, while the conduct of Keppel was approved.
He was subsequently at different times first lord of the admiralty, and in April, 1782, wascreated Viscount Keppel of Elvedon in Suffolk, having for many years previous been a member of the house of commons. II. George Thomas, sixth earl of Albemarle, born June 13, 1799, succeeding his brother, the fifth earl, in 1851. He entered the army, and was at the battle of Waterloo. In •1846 he became one of the secretaries of Lord John Russell, and sat in the house of commons, in the interest of the liberal party, from 1832 to 1835, and again from 1847 to 1851. He has written "Journey from India to England " (2 vols., 1827), "Journey across the Balkan" (2 vols., 1831), and "Memoirs of the Marquess of Rockingham" (1852). III. Sir Henry, an admiral, brother of the preceding, born June 14, 1809. He entered the navy at an early age, and was made lieutenant in 1829 and commander in 1833. He commanded one of the vessels of the expedition against China in 1842, and assisted Sir James Brooke in Borneo. He commanded a division of boats at the destruction of the Chinese war fleet in the Fat-shan creek, June 1, 1857, for which service he was made a K. C. B. In May, 1860, he was appointed to the Cape of Good Hope as naval commander-in-chief, and was subsequently transferred to the Brazilian station.
In 1867 he went to the China and Japan station as vice admiral and commander-in-chief. In 1869 he returned to England on attaining the rank of full admiral, and in the following year he was made D. C. L. of Oxford. He has written " The Expedition to Borneo of II. M. S. Dido "
(2 vols., 1847), and "A Visit to the Indian Archipelago in H. M. S. Maeander" (2 vols., 1853), both of which contain extracts from Brooke's diary. - His brother, the Rev. Thomas Robert Keppel (born 1817, died 1863), wrote the "Life of Admiral Keppel" (2 vols., 1842).