I. ˈhəm-ˌbōlt, ˈhu̇m- biographical name
(Friedrich Wilhelm Karl Heinrich) Alexander von 1769-1859 German naturalist, traveler, & statesman
II. biographical name
(Karl) Wilhelm von 1767-1835 brother of preceding German philologist & diplomat
III. ˈhəm-ˌbōlt geographical name
river 290 miles (467 kilometers ) N Nevada flowing W & SW into Rye Patch reservoir & formerly into Humboldt Lake