About Horner Pietersma Stewart

Horner Pietersma Stewart is a general practice law firm in Morrisburg, Ontario, with roots that go back more than 60 years to a predecessor practice called McInnis and MacEwen. Eldon Horner joined that firm in 1996, and when Eric Pietersma joined in 2003 it took the name Horner & Pietersma. Kristen Godwin-Stewart made partner in July 2025, and the firm adopted its current name, Horner Pietersma Stewart, to mark the change.

The firm now has 5 lawyers and 11 support staff working from its Morrisburg office, several with decades of tenure there. Its practice covers real estate, wills and estates, business and corporate law, family law, civil litigation, and municipal law, along with agricultural law, a specialty that reflects the farming communities of South Dundas and the surrounding Eastern Ontario counties it serves. The firm describes many of its clients as staying with it across generations, a detail consistent with a practice that has worked from the same Main Street address under a series of names for six decades.

In the community

  • Eldon Horner chairs the board of directors of RHI, the organization behind the Dundas Manor long term care home, and previously served on the board of Winchester District Memorial Hospital.
  • Eric Pietersma has served as president of the Upper Canada Playhouse, the professional theatre in Morrisburg, and sits on the board of the St. Lawrence Acoustic Stage.
  • Eric Pietersma has taken part in fundraising for the Winchester District Memorial Hospital Foundation and serves on its Ethics and Research Ethics committees.
  • Kristen Godwin-Stewart is a member of the Rural Research Network Ethics Board at Winchester District Memorial Hospital, along with the Stormont, Dundas & Glengarry, Leeds & Grenville, and County of Carleton law associations.

Good to know

A person using a wheelchairAccessible parkingA laptop showing a video callVirtual appointmentsA calendar with a checkmark beside a clockBy appointment

Where to find them

77 Main Street, P.O. Box 733, Morrisburg, ON K0C 1X0 · 613-543-2946

Is this your firm?

Fix or remove this listing, or add a free listing badge

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 your free listing badge

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.

LawOnline.ca Canadian Lawyer Directory listing badge

Similar firms in United Counties of Stormont, Dundas and Glengarry

Aubry Campbell MacLean is a bilingual law firm based in Alexandria, Ontario, led by lawyers Gordon S. Campbell and Matthew MacLean. The firm serves clients across Ontario, and across Canada for Indigenous and federal …

Real Estate LawReal Estate LawBusiness & Corporate LawBusiness & Corporate LawWills, Estates & TrustsWills, Estates & TrustsIndigenous LawIndigenous Law

Giovanniello, Bellefeuille (Avocats & Notaires) is a general-practice law firm serving the greater Eastern Ontario community, offering services in English, French and Italian. The firm practises corporate and commerci…

Business & Corporate LawBusiness & Corporate LawReal Estate LawReal Estate LawFamily LawFamily LawWills, Estates & TrustsWills, Estates & Trusts

Huza Law

2 lawyers · Est. 2002

Huza Law is a small law firm in Cornwall, Ontario, that traces back to the Gatien Law Office founded in 2002. Jonathan Huza took over the practice in 2022 and moved into new Pitt Street offices in 2023. The firm handl…

Real Estate LawReal Estate LawFamily LawFamily LawCivil Litigation & Dispute ResolutionCivil Litigation & Dispute ResolutionBusiness & Corporate LawBusiness & Corporate Law

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 ↗

How this data is compiled and checked · Correct or remove this listing