Marianna Putnam Liddell

Marianna Putnam Liddell is a Portland, Maine estate planning lawyer and managing partner at Pierce Atwood LLP who advises high-net-worth families and individuals on estate planning and frequently serves as trustee for family trusts. She helps clients plan for wealth transfer, legacy goals, and complex personal transitions. She also brings experience coordinating with family advisors, financial planners, accountants, insurance professionals, and business consultants to support thoughtful, integrated planning and clear decision-making for each family.

Marianna earned her J.D. magna cum laude from Boston College Law School in 2003 and was elected to the Order of the Coif. She earned her M.Ed. from the University of Maine in 2000. She also earned her B.A. cum laude from the University of Maine in 1997. She is a Fellow at The American College of Trust and Estate Counsel, serves on Maine’s Probate and Trust Law Advisory Commission, and is a Maine Estate Planning Council member.

Marianna has held a Band 1 ranking in Chambers High Net Worth Guide for Private Wealth Law in Maine since 2016. She has been recognized by The Best Lawyers in America for Trusts and Estates since 2013. She was named Best Lawyers’ Lawyer of the Year in Maine for Trusts and Estates in 2022 and 2025. She was also selected as a New England Rising Star from 2012 through 2015.

Marianna Putnam Liddell serves as managing partner, overseeing strategic initiatives, operations, and client-service priorities across multiple offices. She has served on the management committee since 2013 and previously chaired the Trusts & Estates Practice Group. She also serves as a director of Katahdin Trust Company and participates in professional estate-planning organizations. Her combination of leadership, technical knowledge, and collaborative planning experience supports families navigating significant financial and personal decisions effectively.

Law Office Affiliations

• Managing Partner, Pierce Atwood LLP
• Fellow, The American College of Trust and Estate Counsel
• Member, Maine State Bar Association, Trusts and Estates Section

Licensed State

• Maine
• Massachusetts

Education

• Boston College Law School
  Juris Doctor (JD)
• University of Maine
  Bachelor of Arts (BA)