Justo and Jorge Castillo come from the Los Castillo workshop. Los Castillo was an influential and ongoing design and manufacturing enterprise established in 1939 by Antonio Castillo and his brothers Justo and Jorge and their cousin Salvador Teran. Los Castillo is known for sterling jewellery and fine pieces in "married metals" combining various metals such as silver, copper and brass. Castillo who arrived in Taxco in 1923, began his long career working for William Spratling at Taller de las Delicias. He married Margot van Voorhies prior to opening Taller Los Castillo bu they were later divorced in 1946. (see The Little Book of Mexican Silver Trade and Hallmarks, 2013)