What state was the man that Atchison County was named after from?
Atchison County Historical Museum:  Both the city of Atchison and Atchison County, Kansas are named after United States Senator and legendary "President for a day" David Rice Atchison. David Rice Atchison: David Rice Atchison (August 11, 1807January 26, 1886) was a mid-19th century Democratic United States Senator from Missouri.
Missouri