About Mousseau, DeLuca, McPherson, Prince LLP

Mousseau DeLuca McPherson Prince LLP is a full service law firm based in downtown Windsor, Ontario, with a second office in Belle River. The firm traces its roots to two Windsor practices. One began in 1923 when Norman J. McLarty and Gordon L. Fraser founded a Windsor law practice, which was reorganized as McPherson, Prince & Geddes in 1965 after Leon Z. McPherson, Walter H. Prince, and Hugh B. Geddes joined over the years. The other started in 1961 when Max N. Mousseau opened a law practice, which became Mousseau, Dube, DeLuca after Edward J. Dube and Armando F. DeLuca joined as partners in 1966. The two firms merged on January 1, 2001 to form the current partnership, and in October 2023 marked 100 years of continuous practice in downtown Windsor.

The firm practises business and corporate law, wills and estate planning, family law, civil litigation, personal injury, employment law, real estate, land development, and municipal law, and it defends clients facing Criminal Code and Highway Traffic Act charges. It acts as an agent for the federal Director of Public Prosecutions and serves as solicitor for the Town of Amherstburg. Eleven lawyers currently practise at the firm, and one, John J. Macri, is an accredited, certified mediator.

In the community

  • Lawyers at the firm serve on the boards of the University of Windsor, the Windsor Regional Hospital Foundation, and the Art Gallery of Windsor, and have held leadership roles with the John Howard Society and local Rotary clubs.
  • One lawyer served as a trustee and chair of the Windsor-Essex Catholic District School Board from 1982 to 2014 and has taught business law at the University of Windsor and St. Clair College.
  • Thomas Robert Porter, a lawyer at the firm, served as a Windsor city councillor from 1982 to 1994 and has held board positions with the Essex Region Conservation Authority and the Windsor-Essex County Development Commission.
  • The Downtown Windsor Business Improvement Association recognized the firm's centennial in October 2023, with Windsor's mayor attending the open house.

Good to know

A person using a wheelchairAccessible parkingA calendar with a checkmark beside a clockBy appointment

This firm’s lawyers at a glance

Languages on the roster
English, French

Offices 2

Suite 200 - 525 Windsor Avenue

473 Notre Dame Street, Suite 4, P.O. Box 279

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This listing was generated by AI from public sources in September 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗

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