Duke of Alba the House of Álvarez de Toledo (extinct in 1755), the House of Silva (extinct in 1802), and the House of FitzJames, which descends from an illegitimate son of King James II of England. Famous dukes include Don Fernando Alvarez de Toledo, 3rd Duke of Alba, governor of the Spanish Netherlands (references to "Alba" (Alva in Dutch), particularly in the context of Dutch history, are usually about him), and Doña María del Pilar de Silva, 13th Duchess of Alba, a muse of the painter Francisco Goya. Various dukes have married into the families of Christopher Columbus and Cosimo de Medici, as
Sabbath in Christianity Sabbath commandment, referring it to eschatological rest rather than observance of a literal day. Such writing, however, did serve to deepen the idea of Christian rest on Sunday, and its practice increased in prominence throughout the early Middle Ages. Thomas Aquinas taught that the Decalogue is an expression of natural law which binds all men, and therefore the Sabbath commandment is a moral requirement along with the other nine. Thus in the west, Sunday rest became more closely associated with a Christian application of the Sabbath, a development towards the idea of a "Christian Sabbath" rather than a Hebrew one.