Dionisio Alcalá Galiano

Dionisio Alcalá Galiano (8 October 1760 – 21 October 1805) was a Spanish naval officer, cartographer, and explorer. He mapped various coastlines in Europe and the Americas with unprecedented accuracy using new technology such as chronometers. He commanded an expedition that explored and mapped the Strait of Juan de Fuca and the Strait of Georgia, and made the first European circumnavigation of Vancouver Island. He reached the rank of brigadier and died during the Battle of Trafalgar.

He sometimes signed his full surname, Alcalá-Galiano, but often used just Galiano. The published journal of his 1792 voyage uses just the name Galiano, and this has become the name by which he is most known.