Early Lithograph Dunville & Co Distilleries Belfast. Featuring the factory advertising winning 24 Prize Medals in original frame 72 x 56cm. Dunville & Co was a tea and spirits merchant company, based in Belfast, County Antrim. The company initially gained success as an Irish whiskey blender, but later produced and marketed its own whiskey, having constructed its own distillery. The company was founded by John Dunville who joined William Napier of Napier & Co. The spelling of Dumvill was changed to Dunville and in 1825 the company name became Dunville & Co. In 1837, Dunville began producing its most popular whisky