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Mary M. Culley

Of Counsel


Mary M. Culley has facilitated the decision-making processes of individuals, families, and fiduciaries in Delaware and Pennsylvania in the areas of estate planning, estate and trust administration, and federal and state transfer taxation for over 25 years.

Estate and gift planning comprise a significant portion of Mary’s practice. She assists clients with estate plans designed to accomplish their personal goals and preserve wealth by minimizing transfer taxes and probate fees. She designs estate plans with the flexibility to adjust to subsequent changes in the estate tax law and/or the clients’ wealth.

Mary has extensive experience representing fiduciaries (executors, administrators, and trustees), and beneficiaries of estates and trusts. With the assistance of experienced paralegals, Mary guides even complex estates through the estate administration process in an efficient and timely manner.

Recent Matters

  • Counseled clients who appointed agents under powers of attorney and advance directives for health care as to their fiduciary responsibilities and the limits of their authority
  • Provided “family consultations” to assist the clients with informing interested parties about his or her responsibilities and the limits of the law
  • Represented clients in the Delaware Court of Chancery in proceedings for the establishment, maintenance, accounting and defense of guardianships
  • Represented clients in proceedings for the creation of special needs trusts to protect litigation and settlement awards payable to clients with disabilities
  • Assisted clients in the reformation of decedents’ wills and trusts to protect inheritances payable to beneficiaries with special needs as well as maintain the beneficiaries’ eligibility to receive needs-based governmental benefits

Professional Affiliations

Delaware Uniform Power of Attorney Act Task Force, 2009-2010
Delaware State Bar Association, Committee on the Law and the Elderly, Secretary, 1997-98
Delaware State Bar Association, Estates and Trusts Section, Chair, 1994-95
Delaware State Bar Association, Women and the Law Section, Chair, 1989-90
American Bar Association
Delaware Pro Bono Inn of Court
Delaware Attorney for the Special Needs Alliance
National Academy of Elder Law Attorneys


News & Events

News & Events



Delaware Volunteer Legal Services, Board of Directors
St. Thomas More Society, Executive Committee, President (2003-2004)
Delaware Care Plan, Inc., Board of Directors, Secretary
Children’s Beach House, Board of Directors
Delaware Community Foundation, Fund For Women, Founder, Advisory Board, Grants Committee Co-Chair, (2004-2005)
Forum of Executive Women
International Women’s Forum
Waggie's by Maggie and Friends Advisory Board



Corporate INTL Tax Planning - Law Firm of the Year, 2018

Best Lawyers®, 2008-2020

Delaware Today®, Top Lawyer 1996, 1999, 2001, 2004, 2006, 2008-2012, 2014-2018

  • 2018 Top Vote-Getter in Elder Law

Delaware Volunteer Legal Services Pro Bono Honor Roll, 2009

DuPont Women Lawyers’ Network, Themis Award, Recipient, 2006

T 302.888.6885
F 302.571.1750


Delaware, 1985

Pennsylvania, 1985

U.S. District Court for the District of Delaware

U.S. Tax Court


Temple University Graduate School, LL.M., 1988

Widener University Delaware Law School, J.D., cum laude, 1984

Saint Mary's College for Women, B.A.,1968

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