Prompt
Generate a realistic portrait of Gideon Welles, an American politician and journalist, in a formal 19th-century setting, possibly with a backdrop of a naval ship or a subtle hint of a desk with papers, reflecting his role in the expansion of the U.S. Navy during the Civil War and his position as Secretary of the Navy; he should be dressed in attire befitting the era, with a serious yet approachable demeanor, in the style of a formal oil painting from the 1800s.