Nancy, there is a family of Berdans in southern MN-around New Ulm and Sleepy Eye,MN. I just contancted one of them this week,Jack Berdan b about 1931 and now lives in Northfield,MN,he said his ancestors were from France and he will send me some info prepared by his aunt. I'm from a branch that goes bach to Albert E. Berdan, b. about 1816 in Quebec,d. 1898 in Northfield,MN. I can't find the parents or siblings of Albert nor any connection to Jan Berdans of NJ. If you are interested let me know.