Byron Street Legal
Automatically compiled listing. Details may contain errors.3 lawyers · Established 2014 · Durham Region
One of 46 law firms listed in Whitby, and one of 11 handling Business & Corporate Law.
About Byron Street Legal
Byron Street Legal is a small business law firm in Whitby, Ontario, working in business and corporate/commercial law, commercial real estate, and wills, estate planning and administration. Denise Branton founded the firm as Branton Law in 2014 and rebranded it as Byron Street Legal in March 2025, after more than ten years under the original name. Branton earned a law degree from Osgoode Hall Law School in 2005, was called to the Ontario bar in 2006, and practiced in Toronto for five years before relocating to Durham Region to build the firm.
Two associates round out the legal team. Sydney Aquino, called to the Ontario bar in 2023 after an LL.B. from City, University of London and an LL.M. in Canadian Common Law from Osgoode Hall, works on incorporations, corporate reorganizations, and commercial leasing. Marshall Mayne, called to the bar in 2015, spent eight years at a corporate-commercial firm in London before joining Byron Street Legal, and now handles business purchase and sale, real estate transactions and related financings, and corporate reorganizations. Branton is also working toward a Trusts and Estates Practitioner (TEP) designation with STEP Canada, connecting the firm's estate planning work to its corporate practice.
Practice areas
In the community
- Partners with the Rotary Club of Whitby Sunrise on local events.
- Makes an annual donation to the local food bank.
- For eight years running, has awarded a financial prize to an outstanding law student at a local high school.
- Belongs to the Whitby Chamber of Commerce, the Ajax-Whitby Board of Trade, and the Greater Oshawa Chamber of Commerce.
- Sponsors Pickleball with a Purpose, a charity tournament benefiting Their Opportunity, an organization working to remove barriers to youth access in sports.
- Associate Sydney Aquino has spoken for Durham Region's Public Legal Education Committee, including at a 'Braiding Diversity Into Justice' event.
- Associate Marshall Mayne serves on the Board of Directors of the Oshawa Historical Society.
Good to know
Accessible parkingLawyers 3
Where to find them
113 Byron Street, North Whitby, Ontario L1N 4M8 · 905-493-6333
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Real Estate LawWills, Estates & TrustsBusiness & Corporate 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 ↗
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