María Cayetana de Silva, 13th Duchess of Alba the House of Osuna. The Duchess' relationship with famed Spanish painter Francisco Goya and her somewhat eccentric personality have contributed greatly to a continuing interest in her life during the two centuries since her death. Goya executed several well-known portraits of the duchess, most of them during his stay at Sanlúcar de Barrameda (one of the Andalusian country seats of the House of Medina-Sidonia), shortly after the death of her husband, the Duke of Alba, who was also Duke of Medina Sidonia, in 1796. Goya's accompaniment of the recently widowed Duchess combined with certain innuendo expressed in his portraits of
Witches' Sabbath century. The "Canon Episcopi" forwards the Christian doctrine that things of this nature were false delusions and did not occur in reality. "Errores Gazariorum" later evoked the Sabbat, in 1452. Helping to publicize belief in and the threat of the Witches' Sabbath was the extensive preaching of the popular Franciscan reformer, Saint Bernardino of Siena (1380–1444), whose widely circulating sermons contain various references to the sabbath as it was then conceived and hence represent valuable early sources into the history of this phenomenon. Some allusions to meetings of more than one witch and possibly other demons are made in the