de Duquesne-Guitton, also spelled Duquesne-Guiton, (1648–1724) was a French naval commander.
He sighted Eendrachtsland on the Western Australian coast and sailed in close to shore near the Swan River on 4 August; this was France's first recorded contact with Australia.
He wrote that it looked very attractive, and fully covered with green despite "the fact that we were in the middle of winter in this country".
[1] His nephew Nicolas Gedeon de Voutron also sighted the western coast of Australia that year on another ship at the same latitude.
[1] He was appointed Governor General of the Windward Islands in the West Indies ("Gouverneur général des Isles du Vent") in reward for renouncing Protestantism and becoming a Catholic, and held that office from 1714 to 1717.