About Underwood, Ion & Johnson Law

Underwood, Ion & Johnson Law is a full-service business law firm in Brantford, Ontario, founded in 1978. The firm now practises through Carolyn Johnson Professional Corporation, representing corporations, small businesses and individuals across corporate and commercial law, real estate, construction, employment, environmental law, and wills and estates.

William H. Underwood, a Queen's University law graduate called to the bar in 1975, opened the Brantford practice and built a corporate commercial practice over 36 years before stepping away in 2012 and naming Carolyn Johnson as successor. James G. Ion, born and raised in Brantford, earned a BA Honours and LLB from Queen's University in 1974, was called to the bar in 1976, and built a civil litigation practice covering construction liens, land disputes, family law, wills and estates and personal injury before retiring in 2016.

Carolyn J. Johnson holds a Bachelor of Commerce from St. Mary's University and a Bachelor of Laws from Dalhousie University, and was called to the Ontario bar in 1989. Johnson now leads the firm, practising corporate and commercial law, real estate, employment law, construction law and wills and estates, with experience in environmental remediation, shareholder remedies and financing transactions.

Practice areas

Not listed

In the community

  • Carolyn Johnson has served as a Board member of the Heart and Stroke Foundation, Big Sisters, United Way and the Boys and Girls Club.
  • Johnson served for six years as a Governor of Mohawk College of Applied Arts & Technology, chairing its Finance Committee and sitting on its Governance Committee.
  • Johnson has also been involved with the Soroptimist of Grand Erie's Dream It Be It career support program for girls.

Good to know

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Where to find them

442 Grey Street, Unit B, Brantford, ON N3S 7N3 · 519-759-0920

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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 ↗

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