Don Julio is a brand of tequila produced in Mexico. It is the largest brand in value and eight largest in volume. It is distilled, manufactured, bottled, sold, and distributed by Tequila Don Julio, S.A. de C.V. from its corporate facility in the Colonia El Chichimeco district, in the city of Atotonilco El Alto, Jalisco, Mexico. It is distributed in the United States by Diageo, under licensing from its patent holder, Tequila Don Julio, Sociedad Anónima de Capital Variable, Jalisco, Mexico, but it is sold worldwide.
Bio from Wikipedia - See more on en.wikipedia.org Text under CC-BY-SA license