Four British bachelors, led by David Batey, homesteaded the area in 1878, the time logjam obstructions were cleared downriver at the site of Mount Vernon. In 1884–85, Batey built a store and home for the arrival of the Mortimer Cook family from Santa Barbara, California where Cook had been mayor for two terms. Cook intended to name his new Pacific Northwest town Bug due to the number of mosquitos present, but his wife protested along with a handful of other local wives. Cook was already the namesake for the town Cook's Ferry on the Thompson River in British Columbia. With "Bug" being so unpopular, Cook derived a town name from Spanish; knowing "cedro" was the word for cedar, he replaced one letter to make the name unique, settling on "Sedro".