Paul A. McGowan III

Paul is a Martindale-Hubbell AV-rated tax lawyer with over 35 years experience. His law practice concentrates in the areas of estate planning, estate and trust administration, and corporate law, including the formation of limited liability partnership and limited liability companies for high net worth clients.

Paul practiced in Boston for 25 years, first at Bingham Dana & Gould (now Morgan, Lewis & Brockius LLP),   as manager of its Trusts & Estates Department, where he was responsible for handling tax, trust and estate administration for the firm’s high net worth clients, and later as a founding partner at McGowan Engel Tucker Garrett & Schultz, P.A., a business law firm with a diversity of high net worth and closely-held corporate clients. In 2000, after moving his law practice to the South Shore, where he lives, he continues to represent his current high net worth clients, as well as new clients.

In addition to his law degree, Paul is a Certified Public Accountant, has a Master of Legal Letters degree (LLM) in Taxation from Boston University Law School, and a Master of Business Administration (MBA) degree from Northeastern University.  During Paul’s professional career, he has been a lecturer in taxation at Babson College Graduate School and a lecturer in accounting at Northeastern University, where he was awarded a teaching fellowship while pursuing his MBA.   Paul is married with two children (and two grandchildren). His hobbies and diverse interests include spending time with his family, golf, reading, cosmology and particle physics, Broadway plays, and national and international travel with family and friends. paul@mhlawgroup.com


Les L. Hoiberg

Les is very excited to expand his practice to the South Shore by establishing an association with attorney Paul McGowan, leaving his former firm of Vacovec, Mayotte & Singer LLP, while continuing to offer premier tax, trust, and estate planning services to clients in the Greater Boston area at a satellite office in Newton. 

After graduating with honors from Suffolk University Law School (J.D., cum laude, 2000), Les obtained the highest degree for tax law studies at the Boston University of School of Law (L.L.M. in Taxation, 2004). He’s since had more than fourteen years of experience providing skilled income tax preparation and fiduciary services, as well as estate planning services tailored specifically for domestic and international individuals, and nontraditional families. Over his career, Les has also developed an expertise in fiduciary law by serving as probate counsel on dozens of fiduciary litigation cases. 

Les is a member of the Boston Estate Planning Counsel, the International Society of Trust and Estate Practitioners (STEP), and is licensed to practice in both the State of Florida and the Commonwealth of Massachusetts. Les currently lives in Hanover with his spouse and three young sons, and is an active member of the First Congregational Church of Hanover, serving as assistant treasurer and a member of the church’s finance committee. les@mhlawgroup.com


Kelli J. Seaholm, Paralegal

Kelli J. Seaholm has worked with Paul McGowan for over 32 years as a paralegal, accountant, and office manager. She is an integral part of the team, and responsible for the management of the firm’s bookkeeping, budgeting, accounts receivable, and accounts payable. As paralegal, she performs legal research and is involved in all aspects of estate and trust administration from start to finish, which includes the preparation of petitions, probate and trust accounts, tax returns, and the pleadings required under the Massachusetts Uniform Probate Code. Kelli was born and raised in the Metrowest area, and in her spare time loves reading, knitting, hiking, and traveling. kelli@mhlawgroup.com