Shiawassee County takes its name from the Shiawassee River, which enters the county near the southeast corner, passes through the villages of Byron and Vernon, the cities of Corunna and Owosso, and from there flows north into the Saginaw Bay, leaving this county near the center of the northern boundary. The name of Shiawassee is derived from Indian lore, meaning “Rolling” or “Sparkling Waters.”