Simon Gillen was a farmer who served as chairman of the Mitchell Town Board and on the Sheboygan County Board of Supervisors in 1880 and 1881.
He served as chairman of the Mitchell Town Board and on the Sheboygan County Board of Supervisors in 1880 and 1881. Born in the Town of Mitchell, Sheboygan County, Wisconsin, Gillen was a farmer. 
