Lawrence John Cannon, born on November eighteenth, eighteen fifty-two, in Quebec City, Canada East, was a prominent Canadian lawyer and judge. He was the son of Lawrence Ambrose Cannon and Mary Jane Cary, with Augustin-Norbert Morin serving as his godfather. Cannon's educational journey began at the Séminaire de Québec and continued at the Séminaire de Nicolet, culminating in a law degree from the esteemed Université Laval.
After being called to the Quebec Bar in eighteen seventy-four, Cannon established a legal practice in Arthabaskaville, now known as Victoriaville, in partnership with Édouard-Louis Pacaud. His political aspirations led him to run as the Liberal candidate for the House of Commons of Canada in the riding of Drummond—Arthabaska in eighteen eighty-two, although he was unsuccessful against Désiré Olivier Bourbeau.
In eighteen ninety-one, Cannon's legal expertise was recognized when he was appointed deputy attorney general and law clerk for the province of Quebec. His judicial career began in eighteen oh-five when he was appointed a judge of the Superior Court for the district of Trois-Rivières, a position he held until his passing in nineteen twenty-one.