Sleeman Brewery Ltd. is a brewery located in Guelph, Ontario, Canada. John H. Sleeman originally began brewing beer in 1834. By 1933 the Sleeman brewery had ceased operations when their liquor licence was revoked for bootlegging, specifically, smuggling beer into Detroit, Michigan. The brewery was restarted in 1988 by John W. Sleeman, the great great grandson of John H. Sleeman. The company's current products are based on the family's original recipes.