Sioui Mitts Seufert
Automatically compiled listing. Details may contain errors.4 lawyers · Hastings County (Belleville)
One of 4 law firms listed in Trenton, and one of 2 handling Family Law.
4 lawyers · Hastings County (Belleville)
One of 4 law firms listed in Trenton, and one of 2 handling Family Law.
Sioui Mitts Seufert is a full-service law firm in Trenton, part of the City of Quinte West in southeastern Ontario. The practice traces back to the early 1950s, when Roderick S. Campbell opened a law office in Trenton that continued until 1982. Bertram R. Garrett joined as an associate in 1972, and when Thomas H. Fleming joined in December 1999 the firm became Fleming Garrett Sioui. It has since taken its current name, Sioui Mitts Seufert, reflecting the present partnership.
The firm now has four lawyers, Devin R. Mitts, Jennifer L. Seufert, Caterina E. Gucciardi, and John S. Wonnacott, practising family law and civil litigation, real estate and land use planning, corporate and business law, wills and estate planning, and criminal defence. Gucciardi holds a master's degree in alternative dispute resolution, completed in 2010, and is a qualified mediator and arbitrator. Wonnacott was called to the bar in both Ontario and Nunavut and has practised criminal law for more than three decades. The firm calls itself the only full-service law firm in the City of Quinte West and offers prospective clients a confidential 30-minute consultation.
Family Law
Civil Litigation & Dispute Resolution
Employment & Labour Law
Real Estate Law
Business & Corporate Law
Wills, Estates & Trusts
Our guide: How to Get a Divorce in Ontario
By appointment21 Quinte Street, PO Box 397, Trenton, ON K8V 5R6 · 613-965-6430
Something wrong with this listing? Tell us and we’ll hide it right away while we review your request, then correct it or take it down.
Add the free LawOnline listing badge to your website. It tells visitors you’re listed in an independent Canadian lawyer directory and links back to this profile. Being listed isn’t a certification or an endorsement, and the badge doesn’t mean we’ve checked your credentials.
Baldwin Law is a Belleville, Ontario firm that handles complex litigation, corporate and commercial law, real estate transactions, and wills, estates and succession planning. Its team includes several lawyers, a paral…
Civil Litigation & Dispute Resolution
Business & Corporate Law
Real Estate Law
Wills, Estates & TrustsOyenubi Law Professional Corporation is a general practice law firm in Trenton (Quinte West), Ontario, run by lawyer Adeyinka Oyenubi. It handles alternative dispute resolution, business and corporate law, constructio…
Business & Corporate Law
Construction Law
Criminal Defence
Wills, Estates & TrustsTempleman LLP is one of the largest regional law firms in central and eastern Ontario, with offices in Belleville, Napanee and Kingston. The firm practises civil and commercial litigation, construction, corporate/comm…
Civil Litigation & Dispute Resolution
Criminal Defence
Employment & Labour Law
Real Estate LawThis 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 ↗
How this data is compiled and checked · Correct or remove this listing