Dumbarton was a Lowland distillery that was founded in 1938 by Hiram Walker & Sons. Dumbarton grain distillery and Inverleven malt distillery were brought to life simultaneously in 1938, with the latter housed inside Dumbarton's walls. In 1956 a third Lomond still was added to the still house. Lomond was mothballed in 1985 before Inverleven followed suit in 1991. The Dumbarton distillery was finally closed, and mostly demolished, in 2002.