Pearsall Marshall LLP
Automatically compiled listing. Details may contain errors.14 lawyers · Established 1965 · Essex County (Windsor), Municipality of Chatham-Kent
One of 3 law firms listed in Tecumseh.
Free consultation
Virtual appointments
Free consultationVirtual appointmentsAbout Pearsall Marshall LLP
Pearsall Marshall LLP is a full service law firm based in Leamington, Ontario, with roots going back to a practice Spencer Pearsall founded there in 1965. The firm grew over the decades under the name Pearsall Marshall Halliwill and Seaton LLP, while a related Tecumseh practice built its own following as Halliwill Seguin LLP. The two recently came back together under the original Pearsall Marshall name, bringing lawyers who had worked across the region for years under one roof again.
Today the firm has thirteen lawyers working out of six offices in Leamington, Windsor, Tecumseh, Kingsville, Amherstburg, and Tilbury. Its practice spans business and corporate law, real estate, wills and estates, employment and labour law, civil litigation, and municipal land use and planning. It has also built a WSIB practice that works exclusively on the employer side, a narrower focus than most general firms take on. Drive Magazine described the firm's approach as offering big-firm-calibre legal services without a trip to Bay Street.
Practice areas
In the community
- Partner Bart Seguin has served as Past President of the Essex Law Association and the Windsor Estate Planning Council, and previously sat as a director of the Windsor Essex Children's Aid Foundation.
- Partner Michael Wills sits on the board of the Windsor Essex Children's Aid Society.
- Partner Justin Walsh has lectured in the Wills and Succession Planning course at the University of Windsor Faculty of Law since 2011 and has been a guest lecturer for the school's Estate Planning and Administration Seminar since 2005. Walsh also taught paralegal courses at St. Clair College from 2008 to 2011 and served as President of the Windsor Estate Planning Council.
- The firm took part in a business networking event with local advisors Venture Pro and Avalign Ltd. in Amherstburg in June 2026, offering employment law guidance to local business leaders and HR professionals.
Good to know
Wheelchair accessible
Woman-owned
LGBTQ+ friendly
Free parking
Virtual appointments
By appointment
In-person servicesFees & payment
Free consultationLawyers 14
Amanda Camlis
Partner
Real Estate Law
Andrea Simonits
Associate
Wills, Estates & TrustsReal Estate Law
Barton Seguin
Partner
David Halliwill
Managing Partner
Real Estate LawWills, Estates & Trusts
David Seaton
Of Counsel
Jenna Hotham
Associate
Wills, Estates & TrustsCivil Litigation & Dispute Resolution
Lyndsey Magliaro
Senior Associate
Business & Corporate Law
Michael Di Risio
Associate
Business & Corporate Law
Michael Wills
Partner
Mitchell MacLean
Associate
Business & Corporate Law
Paul Courey
Of Counsel
Agricultural Law
Robert Tomek
Partner
Wills, Estates & Trusts
Shannel Diewold
Senior Associate
Business & Corporate Law
Susan McBride
Associate
Employment & Labour Law
This firm’s lawyers at a glance
- Called to the bar
- 2002–2020 · median 10 years in practice 5 of 14 lawyers
- Law schools
- University of Windsor, Western University 2 of 14 lawyers
Who handles what
Offices 6
Show all 6 offices
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Business & Corporate LawWills, Estates & TrustsFamily LawCivil Litigation & Dispute ResolutionThis 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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