Halliwill Seguin LLP is an Ontario based law firm that provides legal services for clients in several specific areas of practice.


Halliwill Seguin LLP was specifically created as a partnership between David Halliwill and Barton Seguin to provide their years of experience, know-how, and best practices, in order to streamline clients’ legal requirements through the highest level of communication, trust and integrity. In addition, Halliwill Seguin LLP is backed up by a dedicated team of lawyers and associates who are adept at providing solutions to clients based on their specific areas of expertise.

Meet the Lawyers