Murdoch & Co., also known as Newton, Gordon & Murdoch, was a company of madeira producers which was first established in Madeira in 1745 by Francis Newton. Newton created a partnership with Thomas Murdoch and Thomas Gordon in the next twenty years, and the company grew to be the leading wine-merchant on the island.
Alexandria Daily Gazette, Commercial & Political. “Advertisement.” June 3, 1812. America’s Historical Newspapers.
Biddle, A.J. Drexel. The Land of the Wine Being an Account of the Madeira Islands at the Beginning of the Twentieth Century, and From a New Point of View. Vol. 11. Philadelphia: George W. Jacobs & Co., 1901. https://hdl.handle.net/2027/yale.39002088371092.
Hancock, David. “Commerce and Conversation in the Eighteenth-Century Atlantic: The Invention of Madeira Wine.” The Journal of Interdisciplinary History 29, no. 2 (1998): 197–219.