Co-Managing Partner
Swan Lake First Nation Office
Mr. Cochrane is a founding and managing partner at Cochrane Sinclair LLP. He is a Cree lawyer who grew up in Fisher River Cree Nation and has deep connections to the Indigenous community. Sonny is called to the bar in Manitoba, Saskatchewan, Alberta, and British Columbia, supporting clients across Western Canada. He is the first Cree lawyer appointed King’s Counsel in Manitoba. He also received the Queen Elizabeth II Platinum Jubilee Medal for his advocacy and contributions toward reconciliation with Indigenous peoples. He is regularly retained by First Nation governments for business development initiatives, specific claims, child welfare issues and self-government/jurisdictional matters. His advice is also sought on matters related to the treaties and Canada’s constitutional framework in relation to Indigenous people. He represents First Nations throughout western Canada in the development of their child welfare laws and at self-government negotiation tables with Canada and Provinces. He is also a member of our firm’s Class Action legal group which is committed to addressing historical wrongs against First Nations in Canada.

Swan Lake First Nation Office
115-300 Alpine Way
Headingley, Manitoba
R4H 0E1
Winnipeg Office
201-211 Bannatyne Avenue
Winnipeg, Manitoba
R3B 3P2
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