Carl Wessel Family

My father was Carl Edward Wessel, Dec.1911, Leonardsville/Minneapolis,Minn. area, died Feb.10,1991 in Little Rock, Ark.
He grew up working on a farm in Minnesota. All info on family I have is: Mother name; Kate (Katherine ?), father name; Charlie. Brother name; Ralph (I think there was another named Herb, not sure) Sister name; Katherine lived in Iowa.
Dad married Bernadine ?? in Minnesota, had 7-8 children, Delores, James Gordon, Kenneth, Herb (now called Howard), Ron, Jimmy, Chuck, and Shirley(died as baby), joined Army, was in WWII. Divorced, children from that marriage went to orphanages/foster homes. He was stationed in Camp Fannin, Tyler,TX., where he met my mother, Exa Fredonia Champion and married in April, 1945. They had 4 children; Shirley,Roy Glenn dec. 1971,Katherine (Kathy) and Connie. Exa died in 1957, Carl died in 1991. I was told while growing up that my paternal grandparents owned farm land in Minnesota, and was German decent, but later was told the family was native-American heritage-Winnebago Indian?. I am anxious to know more about my father's family and my relatives. If you know anything about this family or part of it, please contact me, Shirley, @ us2thompsons@worldnet.att.net.