Posted on: Whiteside Co. Illinois Queries Reply Here: http://cgi.rootsweb.com/~genbbs/genbbs.cgi/USA/Il/Whiteside/10917 Surname: Siefken ------------------------- Re: SIEFKEN's in WHITESIDE CO, IL. Looking for information on Gerd M. Siefken, John Fred Siefken, and Etha C. Siefken. All were born in Germany according to the cenus records. These 3 appear in 1880 IL cenus. Annie M., John and Etha's daughter, eventually married Charles O. Hanson.