Campbell Gunn Seib Jones: Law Firm in Winnipeg, MB

Campbell Gunn Seib Jones (CGSJ) is a criminal defence law firm based in Winnipeg, Manitoba. The firm represents clients on matters including assault and violent crime, drug offences, sexual offences, impaired driving, weapons and firearms offences, and appeals, and its lawyers have appeared at all levels of court, including the Supreme Court of Canada.

Practice areas

Criminal Defence

Good to know

Wheelchair accessible A calendar with a checkmark beside a clock

By appointment

Lawyers 10

Aaron Seib Partner Danny Gunn Founding Partner Hayley Allardyce Associate Kevin Warkentin Associate Kristen Jones Partner Marc Zurbuchen Associate Patrick Gutowski Associate Roberta L. Campbell Founding Partner Sam Green Associate Shira Brand Associate

Where to find them

780-444 St. Mary Avenue, Winnipeg, Manitoba R3C 3T1 · 204-953-3690

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This listing was generated by AI from public sources in July 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 Manitoba directory ↗

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