Question: the Vancouver Expedition was led by a captain born in which year ?

Context paragraphs:
Sir William Bellingham, 1st Baronet: Sir William Bellingham, 1st Baronet (c. 1756 – 27 October 1826) was an Irish-born British politician and the "controller of the storekeepers' accounts" for the Royal Navy.  Bellingham was charged with organizing and procuring provisions for the Vancouver Expedition.  Though he never saw the Pacific Ocean, Bellingham Bay and the city of Bellingham, Washington, are named for him.

William Lee (captain): William Lee was a ship's captain born in Austerfield, Yorkshire, England.

Frederick Chamier: Frederick Chamier (1796 – 29 October 1870) was an English novelist, autobiographer and naval captain born in London.  He was author of several nautical novels that remained popular through the 19th century.

Joseph Baker (Royal Navy officer): Joseph Baker (1767–1817) was an officer in the Royal Navy, best known for his role in the mapping of the Pacific Northwest Coast of America during the Vancouver Expedition of 1791-1795.  Mt. Baker is named after him.

Vancouver Expedition: The Vancouver Expedition (1791–1795) was a four-and-a-half-year voyage of exploration and diplomacy, commanded by Captain George Vancouver.  The expedition circumnavigated the globe, touched five continents and changed the course of history for the indigenous nations and several European empires and their colonization of the Americas.  The expedition at various times included between two and four vessels, and up to 153 men, all but six of whom returned home safely.

Towereroo: Towereroo (born c. 1776, date of death unknown) was the first Hawaiian to visit Europe.  He returned to the Hawaiian islands on the Vancouver Expedition in 1792.  Although during his time the British spelled his name "Toweroo", it would probably be Kualelo with modern Hawaiian language spelling.

Zachary Mudge: Zachary (variously Zacharia or Zechariah) Mudge (22 January 1770 – 22 October 1852) was an officer in the British Royal Navy, best known for serving in the historic Vancouver Expedition.

Joseph Whidbey: Joseph Whidbey (1757 – 9 October 1833) was a member of the Royal Navy who served on the Vancouver Expedition 1791–95, and later achieved renown as a naval engineer.  He is notable for having been the first European to discover and chart Admiralty Island in the Alexander Archipelago in 1794.

George Vancouver: Captain George Vancouver (22 June 1757 – 10 May 1798) was a British officer of the Royal Navy, best known for his 1791–95 expedition, which explored and charted North America's northwestern Pacific Coast regions, including the coasts of contemporary Alaska, British Columbia, Washington, and Oregon.  He also explored the Hawaiian Islands and the southwest coast of Australia.

William Robert Broughton: William Robert Broughton (22 March 176214 March 1821) was a British naval officer in the late 18th century.  As a Lieutenant in the Royal Navy, he commanded HMS "Chatham" as part of the Vancouver Expedition, a voyage of exploration through the Pacific Ocean led by Captain George Vancouver in the early 1790s.

Supporting paragraphs: William Robert Broughton George Vancouver
Answer: 1757