Looking for - Looking for Daroldine, not seen in 31 years.

Looking for Daroldine. Maiden name was Schilling. She lived in Milwaukee, WI when she gave birth to Daniel Spencer Clark on April 23, 1967 at St. Francis hospital. At the time she was married to Dean Clark. Dean got custody of Dan, when they divorced, and nobody has heard from Daroldine since. Her nickname was Deena. Her mother's name was Ivadel Taves, and her fathers name was Darold Schilling. Daroldine was believed to be remarried, shortly after the divorce. It has been 31 years, of wondering for Dan, and he would like to meet his birth mother. I have run into a lot of dead ends in this search. If you have any information or suggestions, I would gladly take them. Thank you.