Answer:
Some Indians of the Pacific Northwest variously called Mount St.
Helens (Washington) "Louwala-Clough," or "smoking mountain." The
modern name, Mount St. Helens, was given to the volcanic peak in
1792 by Captain George Vancouver of the British Royal Navy, a
seafarer and explorer. He named it in honor of a fellow
countryman, Alleyne Fitzherbert, who held the title Baron St.
Helens and who was at the time the British Ambassador to Spain.
Vancouver also named three other volcanoes in the Cascades --
Mounts Baker, Hood, and Rainier -- for British naval officers.