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Mary E. Callow

Mary E. Callow

Retired Partner/Of Counsel

Mary E. Callow retired as a partner of the firm effective June 30, 2017, but she continues her affiliation with CCM in an of counsel capacity.  Ms. Callow is a founding partner of Clingen Callow & McLean, LLC. She practiced in the areas of estate planning, estate administration, and contested estates for over thirty years. Her clients included fiduciaries and beneficiaries, and she successfully settled and administered family disputes. Her experience covered a wide range of family dynamics, along with estate planning for high net worth individuals. Her trademark was listening to clients’ stories and concerns in order to help them resolve problems.

Practice Admissions, Affiliations & Memberships

Court Admissions:

  • Supreme Court of Illinois
  • U.S. District Court for the Northern District of Illinois


  • DuPage County Bar Association
  • DuPage County Estate Planning Council
  • Trustee and past Chair of Dominican University Board
  • Past Trustee Northwestern Cadence Hospital (formerly Central DuPage Hospital)
  • Past Trustee Trinity High School
  • Past Trustee Child’s Voice

Honors & Awards:

  • Business Ledger: Influential Women in Business Award
  • Dominican University: Caritas Veritas Award


  • Juris Doctor,
    The John Marshall Law School (1985)
  • Bachelor of Arts in Political Science,
    Rosary College (now Dominican University) (1967)

Representative Matters

  • Estate planning for married and non-married couples and single persons
  • Settlement of contested and routine estates
  • Sales of farmland throughout Illinois
  • Guardianships for minors and disabled adults
  • Asset protection for clients and their descendants
  • Generation-skipping tax planning