About Creighton Law LLP

Creighton Law LLP is a full service law firm based in Oshawa. The firm describes itself as one of the oldest law firms in Canada and the oldest in Durham Region, tracing its roots to 1885, when it was established by John Frederick Grierson, whose father served as Oshawa's first police magistrate. T. Kelso Creighton joined the practice in 1919. Creighton was later appointed a King's Counsel in 1938 and served as a Member of Provincial Parliament in Ontario from 1945 to 1948. The firm's name changed more than once over the following decades. At one point it operated as Creighton, Victor, Alexander, Hayward and Morison before eventually becoming Creighton Law LLP.

Today the firm's lawyers handle family law, wills and estates, real estate, estate litigation, civil litigation, business and corporate law, immigration, and landlord and tenant matters, serving Oshawa and the wider Durham Region. Legal services are offered in English and French, and the firm also provides notarial services. Many of the firm's earlier partners served as Crown attorneys, military officers, or judges, a history the current lawyers point to as part of what they try to live up to.

Milestones & recognition

  • The firm was established in 1885 by John Frederick Grierson, whose father was Oshawa's first police magistrate.
  • T. Kelso Creighton joined the firm in 1919. Creighton was appointed a King's Counsel in 1938 and served as a Member of Provincial Parliament in Ontario from 1945 to 1948.
  • The firm operated for a time as Creighton, Victor, Alexander, Hayward and Morison before it became Creighton Law LLP.
  • The firm's senior counsel, G. Charles S. Morison, was called to the bar in 1980 and became a partner in the firm in 1982.

In the community

  • Lawyers at the firm have been involved with organizations including the Lakeridge Health Foundation, the Chamber of Commerce, the Kiwanis and Rotary clubs, Big Sisters, the Hearth Place Cancer Support Centre, the United Way, and the Ontario Philharmonic.
  • The firm has had lawyers take part as volunteers at the Pan Am Games.
  • One of the firm's associate lawyers currently sits on the Youth Justice Committee with BGC Durham.

Good to know

A person using a wheelchairWheelchair accessibleA calendar with a checkmark beside a clockBy appointment

Fees & payment

A clock beside gold coins with a dollar signHourly

This firm’s lawyers at a glance

Called to the bar
1980–2025 · median 7 years in practice 5 of 5 lawyers
Law schools
University of Windsor (4), Osgoode Hall Law School 5 of 5 lawyers
Languages on the roster
English, French

The neighbourhood

The firm's office is at 235 King Street East in Oshawa, close to the Durham Region courthouse. That's a practical detail for a firm whose work includes family law, estate litigation and civil litigation, since court appearances are a regular part of the job. The office offers free parking and is near public transit, which matters for clients travelling in from elsewhere in Durham Region for an appointment or a court date.

Frequently asked questions

Does Creighton Law LLP handle divorce and child custody matters?
Yes. The firm's family law practice covers separation and divorce, parenting time and decision making, child and spousal support, and division of property for clients in Oshawa and across Durham Region.
Can the firm help me buy or sell a home in Oshawa?
Real estate is one of the firm's core practice areas, covering the purchase and sale of homes as well as mortgages and refinancing.
I need to challenge a will or resolve an estate dispute. Does the firm do that kind of work?
Yes. Alongside its wills and estates practice, the firm handles estate litigation, including will challenges, dependents' relief claims, and disputes between executors and estate trustees.
Does Creighton Law LLP offer services in French?
Yes. The firm provides legal services in both English and French, and it also offers notarial services.
Do I have to visit the Oshawa office in person?
Not always. The firm holds Zoom meetings and handles a lot of file communication by email, so clients don't necessarily need to travel to the office to keep a matter moving.
How do I book a consultation with a lawyer at the firm?
Initial consultations require an appointment, arranged through the receptionist or the contact page. The firm asks clients to allow up to 48 hours for a callback, and notes that appointments are sometimes rescheduled if a lawyer gets called into court on short notice.

Where to find them

235 King St. E. Oshawa, ON L1H 1C5 · 905-723-3446

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Listing compiled from the firm’s public website in September 2026. Verify licence status in the Law Society of Ontario directory ↗