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Gregory S. Mager
Gregory S. Mager
O'Neil, Cannon, Hollman, DeJong S.C.
1329 West Grand Ave., Suite 200
P.O. Box 306
Port Washington, Wisconsin 53074
Phone: 262.284.3407
Fax: 262.284.0442

E-mail Gregory S. Mager

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Gregory assists his clients with family law matters. Before graduating from law school, he was trained as a family law mediator and began mediating cases for the Milwaukee County family courts, and continues to offer mediation services. Gregory attended the American Bar Association Family Law Section’s Annual Trial Advocacy Institute, where he received intensive training on successfully preparing and trying cases, including those involving complex business valuation and psychological issues. He is a member of the Collaborative Family Law Council of Wisconsin, Inc., and the Divorce Cooperation Institute. Gregory uses his extensive skills, training, and experience in negotiation and litigation to help his clients achieve successful resolutions of their divorce, paternity, custody, placement, and support matters.

Gregory Assists Clients With

  • Divorce
  • Collaborative Divorce
  • Cooperative Divorce
  • Paternity
  • Custody and Placement
  • Support
  • Post-Judgment Matters
  • Mediation

Appointments/Awards/Distinctions

  • Martindale-Hubbell Peer Review Rating – AV, reflecting an attorney who has reached the height of professional excellence and is recognized for the highest levels of skill and integrity
  • Selected as a Wisconsin Super Lawyer Rising Star, Law & Politics and Milwaukee Magazine, December 2007 issue
  • 2004-2005 American Bar Association Section of Family Law Chair’s Award, “For meritorious service exceeding what is expected of our leadership”
  • Editor-in Chief, Wisconsin Journal of Family Law (2007-present)
  • Chair, American Bar Association Section of Family Law Trial Practice and Techniques Committee (2004-2005)
  • Vice-Chair, American Bar Association Section of Family Law Trial Practice and Techniques Committee (2001-2004, 2005-2006)
  • Vice-Chair, American Bar Association Section of Family Law Bankruptcy Committee (2003-2004)
  • Vice-Chair, American Bar Association Section of Family Law CLE Committee (2004-2005)
  • Member, American Bar Association Section of Family Law CLE Committee (2005-2006)
  • Associate Editor of the Wisconsin Journal of Family Law (2005-2006)
  • Member, Editorial Board of the Wisconsin Journal of Family Law (2003-2004)
  • Court Commissioner, Milwaukee County Circuit Court, Appointed by Hon. Diane S. Sykes (1998)

Articles/Presentations

American Bar Association Section of Family Law

  • Co-Producer: “Executive Compensation: Is it Income or is it Property?” (May, 2006)
  • Co-Producer and Moderator: “Direct Examination of the Financial Expert: How to Make Your Point and Not Lose Your Audience” (September, 2005)
  • Co-Producer and Moderator: “Hot Tips from the Experts” (August, 2005)
  • Speaker: “Allocation of Dependency Exemptions in Paternity Case and Other Tax Tips” (August, 2004)
  • Producer and Moderator: “Challenging the Superego: How to Prepare for a Psychologist’s Testimony” (April, 2004)
  • Co-Producer and Moderator: “Preparing and Presenting Domestic Violence Protective Order Cases” (May, 2003)
  • Co-Producer and Moderator: “Ethics at Trial in Spite of Your Client” (October, 2003)

State Bar of Wisconsin Family Law Section

  • Literature Review, Family Law Workshop (August, 2000)
  • Case Law Update, Annual Convention (June, 1999)

Law Education Institute, Inc., National CLE Conference®, Family Law Program

  • “The Rules of Evidence: They DO Apply In Family Law” (January, 2004)
  • “What Effective Negotiators Bring to the Table” (January, 2003)
  • “Tricks of the Trade: Low Budget Computer Applications” (January, 2002)
  • “Using a Psychologist as a Consulting Expert: Preparing Your Client for the Inevitable” (January, 2001)