About Ambrosino Law Group

Ambrosino Law Group is a small Toronto firm that has practiced exclusively in family law for more than 20 years, based at 45 St. Clair Avenue West in Toronto. Senior counsel Valois Ambrosino was called to the Bar of Ontario in 1996 after earning an LL.B. from Osgoode Hall Law School in 1994. In 2019, Ambrosino represented the applicant in Ruffolo v. David, a Court of Appeal for Ontario decision on contempt motions in custody disputes, and was quoted in Law Times discussing the ruling. Ambrosino is also certified as a family law arbitrator through the ADR Institute of Ontario and the Institute of Peace and Conflict Studies at Conrad Grebel University College.

Associate Amy Voss joined the firm in 2018, called to the Ontario bar that year after earning a JD from Osgoode Hall Law School in 2017. Voss articled at a Toronto legal clinic serving survivors of gender based violence and assisted on a Supreme Court of Canada intervention involving family law and international relocation. During law school, Voss worked in the family law division of Osgoode's Community and Legal Aid Services Programme and volunteered with the Pro Bono Students' Canada Family Law Project. The firm handles domestic contracts, custody and access, support and property claims, resolved through negotiation, mediation or arbitration as well as litigation.

Practice areas

Milestones & recognition

  • Senior counsel Valois Ambrosino was called to the Bar of Ontario in 1996 and earned an LL.B. from Osgoode Hall Law School in 1994.
  • Ambrosino is certified as a family law arbitrator by the ADR Institute of Ontario and by the Institute of Peace and Conflict Studies at Conrad Grebel University College.
  • Ambrosino represented the applicant in Ruffolo v. David, a 2019 Court of Appeal for Ontario decision on contempt motions in custody and access disputes, and was quoted discussing the ruling in Law Times.
  • Associate Amy Voss was called to the Bar of Ontario in 2018 after earning a JD from Osgoode Hall Law School in 2017.

In the community

  • Ambrosino has taught in the Law Society's Bar Admission Course, mentors articling students, and has presented family law seminars and spoken to secondary school students about legal careers.
  • Before joining the firm, Amy Voss volunteered with the Pro Bono Students' Canada Family Law Project, helping self represented litigants in family court.

Good to know

A person using a wheelchairWheelchair accessible

This firm’s lawyers at a glance

Called to the bar
1996–2018 · median 19 years in practice 2 of 2 lawyers
Law schools
Osgoode Hall Law School (2) 2 of 2 lawyers

The neighbourhood

The firm's office, Suite 1200 at 45 St. Clair Avenue West, sits in an office building built in 1969. It's a fitting spot for a small firm that works only in family law, reachable by families from across the wider Toronto area.

Frequently asked questions

Does Ambrosino Law Group handle divorce and custody cases?
Yes. The firm practices exclusively in family law, including custody and access, child and spousal support, divorce and division of property, and it resolves cases through negotiation, mediation, arbitration or litigation.
Can Ambrosino Law Group draft a cohabitation agreement or marriage contract?
Yes, the firm prepares cohabitation agreements and marriage contracts under Ontario's Family Law Act for both married couples and unmarried partners.
Does the firm handle child protection cases involving the Children's Aid Society?
Yes, child protection matters involving a Children's Aid Society are among the family law issues the firm handles.
Can my family law dispute be resolved through mediation or arbitration instead of going to court?
It can. Senior counsel Valois Ambrosino is certified as a family law arbitrator through the ADR Institute of Ontario and the Institute of Peace and Conflict Studies at Conrad Grebel University College, and the firm resolves cases through negotiation, mediation and arbitration as well as litigation.
How long has Ambrosino Law Group practiced family law in Toronto?
The firm has practiced exclusively in family law for more than 20 years.
Where is Ambrosino Law Group located?
The firm's office is at 45 St. Clair Avenue West, Suite 1200, in Toronto.

Where to find them

45 St. Clair Ave. W., Suite 1200, Toronto, Ontario M4V 1K9 · 416-929-0233

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