Witches' Sabbath (The Great He-Goat) whose full-length portrait appears in the same series. As with the other "Black Paintings", Goya began with a black background which he painted over with lighter pigments, then with broad, heavy brushstrokes of grey, blue and brown. The darker areas were achieved by leaving the black under-paint exposed; this is most obvious in the figure of the Devil. Like the other works in the series, "Witches' Sabbath" is worked up through heavy, slashing brushstrokes. The plaster was underlaid with thick carbon black before the paint was applied in hues of white lead, Prussian blue, vermilion of mercury, and crystals of
María del Rosario de Silva, Duchess of Alba María del Rosario de Silva, Duchess of Alba Doña María del Rosario de Silva y Gurtubay, Duchess of Alba de Tormes, "suo jure" 9th Marquise of San Vicente del Barco, Grandee of Spain (Madrid, Spain; 4 April 1900 – 11 January 1934) was a Spanish aristocrat and socialite. Single heiress of all the titles of her father, Alfonso de Silva, 16th Duke of Híjar, and of the fortune of her mother, María del Rosario Gurtubay, the young Marquise was one of the beauties of her time. She married in London, on 7 October 1920, to Jacobo Fitz-James Stuart, 17th Duke