Graham Moore Admiral Sir Graham Moore , GCB , GCMG ( 1764 – 1843 ) was a British sailor and a career officer in the Royal Navy . He was the younger brother of General Sir John Moore . Naval career . Moore was born in Glasgow , Scotland , the son of the doctor and author John Moore , and Jean Simson . He entered the Navy in 1777 at the age of 13 . He was promoted to lieutenant on 8 March 1782 to serve aboard , taking part in the relief of Gibraltar under Lord Howe , and the subsequent battle of Cape Spartel in October . During the peace he travelled through France , but was recalled to serve aboard , , and then , the flagship of Sir Richard Hughes on the North American Station . On 22 November 1790 he was promoted to commander in the sloop , before finally returning to England in 1793 . Moore was promoted to post - captain on 2 April 1794 , soon after the start of the Revolutionary War , with command of the 32 - gun frigate , in the North Sea and the coast of France . He then commanded the 36 - gun frigate from September 1795 . In her he took part in the Battle of Tory Island on 12 October 1798 , capturing the two days later . In February 1800 he went out to the West Indies , but was invalided home after eighteen months . On the renewal of the war in 1803 he was appointed to ( 44 ) , and with three other frigates — ( 32 ) , ( 38 ) and ( 32 ) — under his command , captured a Spanish treasure fleet of four frigates — " Medea " ( 40 ) , " Clara " ( 34 ) , " Fama " ( 34 ) and " Mercedes " ( 36 ) — carrying bullion from the Caribbean back to Spain off Cadiz in the Action of 5 October 1804 . Moore was then attached to Sir Robert Calder ' s squadron blockading Ferrol . In 1808 , he served as Commodore , flying his broad pennant in the new ship assisting Admiral Sir Sidney Smith with the Portuguese royal family ' s escape to Brazil , and was subsequently made a Knight of the Order of the Tower and Sword . He later served as part of the North Sea fleet for several years . At the close of the Walcheren campaign in December 1809 , he was entrusted with destroying the basin , arsenal , and sea defences of Flushing . Moore commanded from March 1812 , until promoted to Rear - Admiral on 12 August 1812 , and served as Commander - in - Chief in the Baltic for a short time , flying his flag in . In 1814 he served as Captain of the Fleet to Lord Keith in the Channel , and became Second - in - Command , Mediterranean Fleet in 1815 . Following the end of the war he served on the Board of Admiralty between 1816 and 1820 , being promoted to Vice - Admiral in 12 August 1819 . He was Commander - in - Chief , Mediterranean Fleet between 1820 and 1823 , promoted to full Admiral on 10 January 1837 , and served as Commander - in - Chief , Plymouth from 1839 to 1842 flying his flag in . Moore died at his home , Brook Farm , Cobham , Surrey , on 25 November 1843 , and was buried at St . Andrew ' s Church . Family . In 1812 he married Dora Eden , daughter of Thomas Eden , and niece of William Eden , 1st Baron Auckland ; they had one son , Captain John Moore , RN ( d . 1866 ) . Diary . Moore kept a detailed diary from 1784 until 1806 , later published in thirty - seven volumes , which provides a unique account of his service as Lieutenant , Commander and Captain . Namesakes . Several places were named in his honour : the Sir Graham Moore Islands , Cape Graham Moore , and Graham Moore Bay , in northern Canada were named by William Parry , while the Sir Graham Moore Islands , Western Australia , were named by Phillip Parker King .