Mary C. Neff


Frontenac, MO



Mary Neff has experience working with families and children which makes her a sought after divorce attorney, litigator, and mediator in family law. Mary’s extensive experience in child development and parent education allow her to represent families in what can be a difficult time in their lives. Mary’s practice area of family law includes divorce, mediation, litigation, custody, visitation, paternity, modifications and post-dissolution matters.

Mary’s philosophy is to help couples design their divorce so that it meets their individual needs for the future as well as the family as a whole. Mary is passionate about mediation because she sees first hand how low conflict resolution saves time, money, and the children. Mary’s passion for children resonates from her time as a parent educator in Illinois. She also is a Guardian ad Litem in Missouri.

Litigation Percentage

  • 50% of Practice Devoted to Litigation

Certified Legal Specialties

  • Mediator, 2015
  • Collaborative Family Law, 2018

Bar Admissions

  • Missouri, 2012
  • Illinois, 2018


  • Saint Louis University School of Law, St. Louis, Missouri
    • J.D. - 2012
  • Illinois State University
    • B.A. - 1998
    • Major: Family Consumer Sciences

Professional Associations And Memberships

  • Association of Missouri Mediators, 2015 - Present
  • Collaborative Family Law Association, 2018 - Present

Past Employment Positions

  • Marta J. Papa P. C., Associate Attorney, 2013 - 2017
  • Kathleen Shaul, Associate Attorney, 2012 - 2013


  • English (Primary)