"The Pomo people are an indigenous peoples of California. The historic Pomo territory in northern California was large, bordered by the Pacific Coast to the west, extending inland to Clear Lake, and mainly between Cleone and Duncans Point. One small group, the Northeastern Pomo of the Stonyford vicinity of Colusa County, was separated from the core Pomo area by lands inhabited by Yuki and Wintuan speakers. Numerous Pomo tribes have been federally recognized.
It originally meant "those who live at red earth hole" and was once the name of a village in southern Pottery Valley near the present day community of Pomo." Wikipedia