John Elphinstone
John Elphinstone (1722 – 28 February 1785) was a British naval officer who served in the Royal Navy before joining the Imperial Russian Navy in 1770 with approval from the Admiralty. Together with fellow Britons Samuel Greig and Charles Knowles, Elphinstone was part of a group of Russian naval officers under Alexei Grigoryevich Orlov which defeated the Ottoman Navy at the Battle of Chesma, off Chios.