Me Sonia St-Onge Avocats is a family law practice in Salaberry-de-Valleyfield, Quebec, run by Sonia St-Onge, a member of the Barreau du Québec since 1991. The firm handles divorce and separation, custody, child support, mediation, civil union and adoption matters, and Me St-Onge is also an accredited family mediator.

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A person using a wheelchairAccessible parking

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35 Rue de Grande-Île #2, Salaberry-de-Valleyfield, QC J6S 3L9 · 450-747-3007

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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 Barreau du Québec directory ↗

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