Gideon Jacques Denny (1830–1886) was a marine artist who was born in Wilmington, Delaware on July 15, 1830. As a young man, he worked on ships in the Chesapeake Bay. He traveled to California in 1849 with the Gold Rush. He worked as a teamster on the San Francisco docks and was a member of the San Francisco Committee of Vigilance. After two years in California, he moved to Milwaukee, where he studied painting with Samuel Marsden Brookes.