Admiral of the White Sir John Borlase Warren, 1st Baronet (2 September 1753 – 27 February 1822) was a Royal Navy officer, diplomat and politician who sat in the British House of Commons between 1774 and 1807.
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Early life
Born in Stapleford, Nottinghamshire, he was the son and heir of John Borlase Warren (died 1763) of Stapleford and Little Marlow. He entered Emmanuel College, Cambridge in 1769, but in 1771 entered the Royal Navy as an able seaman; in 1774 he became member of Parliament for Great Marlow; and in 1775 he was created a baronet, the baronetcy held by his ancestors, the Borlases, having become extinct in 1689.
Career
His career as a seaman really began in 1777, and two years later he was promoted to master and commander and made captain of HMS Ariadne. Warren was promoted to post-captain on 25 April 1781. On 23 April 1794, as Commodore of the frigate squadron off the north-west French coast assisting in the blockade of Brest, Warren and his squadron captured a number of French frigates. In 1795, he commanded one of the two squadrons carrying troops for the Quiberon expedition and in 1796 his frigate squadron off Brest is said to have captured or destroyed 220 vessels. In October 1798, a French fleet—carrying 5,000 men—sailed from Brest intending to invade Ireland. The plan was frustrated in no small part due to the squadron under his command during the action of 12 October 1798 off Donegal. Warre was promoted to Rear-Admiral of the Blue on 14 February 1799 and again to Rear-Admiral of the White on 1 January 1801.




