 In 1589 Fabio Nelli decided to personally deal with the management of the works of his palace (until the moment his brother had addressed) staying in the rear section which was the only ones finished even with decoration.The first step was the completion of the frontage and cover which turned to the young and promising Diego de Praves accepted, counting as guarantors with Juan de Nates and Juan de Mazarredonda and witness Pedro de Arce.In the agreement referred to at the time which should provide the works and the established price