Mary Devereux.

The Financial Edge in Advocacy

Mary Devereux serves as an indispensable asset to the AEGIS Law team in Saint Louis, where her practice is defined by a unique intersection of legal and financial mastery. As both an attorney and a Certified Public Accountant (CPA), Mary provides her clients with a distinctive edge, translating complex financial data into tactical legal advantages. This dual perspective is particularly vital in estate planning and litigation, where wealth preservation often hinges on the marriage of tax strategy and rigorous fiduciary oversight.

Her analytical skills allow her to excel in crafting comprehensive estate plans that go beyond standard templates. She focuses on developing customized trusts, advising on tax-efficient wealth transfer strategies, and preparing meticulous wills and healthcare directives. In contested matters, Mary leverages her accounting background to manage complex litigation with a level of precision that ensures client interests are protected in both the courtroom and the boardroom.

A Client-Focused Approach

Mary’s dedication to her clients is rooted in her ability to explain complex legal and financial concepts in understandable terms. She takes the time to understand each client’s unique circumstances and concerns, ensuring that every estate plan she develops is perfectly tailored to their needs. This approachable demeanor, paired with her strategic thinking, has made her a go-to attorney for individuals and families seeking expertise in legacy planning and high-stakes civil litigation.

Academic Foundation & Professional Journey

Educational Excellence:
Mary holds a J.D. from Saint Louis University School of Law, where she excelled in both estate planning and trial advocacy. Her foundation in finance is equally robust, including a Master’s degree in Accounting and a Bachelor’s degree in Accounting from Saint Louis University.

An active member of the Missouri Bar, Mary participates in professional organizations including local estate planning councils and trial lawyer associations. Outside of the office, she values spending quality time with family and friends and is an avid traveler, often exploring new cultures to broaden her perspective—a quality she brings back to the diverse legal challenges she handles for her clients.