About Nathens, Siegel LLP

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Nathens, Siegel LLP is a family law firm founded in Toronto in 1995 by Ken Nathens and Brahm Siegel. Both founders are certified specialists in family law with the Law Society of Ontario, Nathens since 2010 and Siegel since 2008. The firm's lawyers work from two Greater Toronto Area offices, one near Yonge and Sheppard in Toronto and one in Mississauga's Erin Park Commercial Centre. Its practice is limited to family law: separation and divorce, family law agreements, children's issues, child and spousal support, property division, and dispute resolution through negotiation, mediation, arbitration, and collaborative law.

Nathens earned a civil and common law degree from McGill in 1992, was called to the Ontario bar in 1994, and added a Master's degree in family law from Osgoode Hall in 2014. Siegel studied at Queen's University, was called to the bar in 1995, and has since co-authored McLeod's Ontario Family Law Rules Annotated and served as consulting editor of the Consolidated Ontario Family Law Statutes and Regulations. Partner Glen Schwartz is licensed to practice in both Ontario and Quebec, and the firm offers services in English and French. A first consultation is offered at a reduced rate, and while the firm does not accept legal aid certificates directly, it will refer clients to a provider that does.

Practice areas

Not listed

In the community

  • The firm established the Nathens, Siegel LLP Scholarship at Queen's University's Faculty of Law in 2017, awarded to upper year J.D. students for academic excellence in the Family Law Clinic course.
  • The firm sponsors the Walsh Family Law Moot & Negotiation Competition, run by AFCC Ontario for second and third year law students.
  • Nathens serves on the board of the Castle Hill Community Association.
  • Nathens is a guest lecturer at the University of Windsor, University of Ottawa, and Osgoode Hall Law School, and has lectured on family law for Ontario Federation of Labour members through Riverdale Mediation.
  • Schwartz guest lectures at the University of Ottawa Faculty of Law and at conferences held by the Family Dispute Resolution Institute of Ontario.

Good to know

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

This firm’s lawyers at a glance

Languages on the roster
Croatian, English, French

Who handles what

Offices 2

4711 Yonge Street, Suite 101, Toronto, ON M2N 6K8

1100 Central Parkway West, Unit 16-200, Mississauga, ON L5C 4E5

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This listing was generated by AI from public sources in August 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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