John C. Clarke was a member of the Wisconsin State Assembly.
Clarke was born on Anglesey in Wales on February 17, 1831.
Previously, he had been Sheriff of Marathon County, Wisconsin; Chairman of the Marathon County Board; a member of the Wausau City Council and Mayor of Wausau.
In 1893, Clarke became Postmaster of Somo, Wisconsin.
Additionally, he was a Marathon County municipal judge from 1859 to 1892 and a delegate to the 1876 Democratic National Convention.