Solano was so named after a celebrated Catholic missionary.
Yolo is a corruption of the Indian word "Yoloy," and means a place abounding with rushes.
Marin was so designated after a great Indian chief, who made war so desperately against the Spaniards.
Sonoma is an Indian word, signifying valley of the moon. The Indians so named the valley in which the present town of that title is situated.
Napa was the name of the Indian tribe who inhabited the valley of the same name.
Mendocino was so named after the first Viceroy of Mexico.
Yuba, a corruption of "uba," originally alluded to the immense quantities of vines which shaded the river.
Butte is a French word signifying hill, and was given by a party of hunters from the Hudson Bay Company to a range of high hills in the valley of the Sacramento. From thence the county is named.
Coluse county was so called after an Indian tribe of which it was the name.
Shalta county is so styled after an Indian tribe also.