Jon E. Steffensen
Of Counsel, Trusts and Estates
45 School Street
2nd Floor
Boston, MA 02108

Jon has over 50 years experience in estate planning, estate and trust administration, fiduciary counseling and charitable gift planning.  For over 40 of those years, anchored one iteration or another of a boutique firm specializing in the aforementioned practice areas and the firm (formerly Steffensen & Associates, LLC) has now become the new Boston office of McLane Middleton, Professional Association.

Jon received his B.A. from Yale University and his J.D. from Northwestern University School of Law.


  • Fellow, American College of Trust & Estate Counsel
  • Massachusetts


  • Massachusetts Bar Association
  • Boston Bar Association
  • Boston Estate Planning Council
  • Arthritis Foundation, National Planned Giving Coordinating Group Member
  • Crown Prince Frederik Fund, Inc., Secretary and Member of the Board (Funds Danish Students Attending The Kennedy School at Harvard University)
  • Yale Scholarship Trust of Boston, Chair
  • Society for the Support of Native American Communities (founded in 1787), Secretary
  • New England Grenfell Association in support of the International Grenfell Association, Board Member



  • Best Lawyers in America (Trusts & Estates), 1995 – present
  • Boston Magazine’s Top Lawyers of 2021 and 2022 (Trusts & Estates)