J. M. (Jack) Bain was born in Thamesford in Oxford County and attended Dairy School at O.A.C. in 1925. He worked at Cherry Hill Cheese Factory, a creamery and dairy in Essex County, and Uniondale Cheese Factory. Bain then operated a cheese factory at Britton in Perth County from 1928-1942. He became fieldman for the provincial government, was appointed chief cheese instructor, was instructor at O.A.C. Dairy School, and then became Director of Milk Products, Dairy Branch, Ontario Department of Agriculture and Food. He was president then secretary-treasurer of the Dairyman’s Association of Western Ontario for several years. Bain won many awards for cheesemaking including the British Empire Championship in 1937 and 1938. He acted as judge at many major cheese exhibitions thoughout Canada and in 1971 he launched the first cheddar cheese plant in Brazil, also introducing brick and Colby cheese there.