Barbara Healy is the unstable, alcoholic, abusive biological mother of Mark,David, Lisa, and Nicki Healy. After separating from her ex-husband she moves to Minnesota. David doesn't want to move with her. Roseanne discovers what kind of mother she is and she allows David to live with the Conners.
Along with her ex-husband, treated Mark and David like crap. After seeing how she acted, Roseanne allowed David to move into their home and treated him like family from the beginning. According to Mark, Barbara and her husband kicked him out when he was 16. They had never bothered to even call them. She and her ex-husband, and their two daughters didn't attend David's wedding.