Keen's Mustard is a brand that has existed since 1742. The original maker, Keen & Sons in England, became Keen Robinson & Company, then was acquired in 1903 by rival mustard-maker Colman's who continued using the Keen's brandname in Canada and Australia. Colman's became Reckitt & Colman after a merger in 1938, and most of that company is now part of Unilever. And while Unilever continues to own the brandname Keen's for the UK domestic market, in the places where the venerable brand is still used, it is now owned by McCormick Canada, and McCormick Australia, both subsidiaries of McCormick Inc of the USA.