Three people in a marriage: a woman and two men. This was the eighteenth-century Italian aristocratic model of marriage, characterised by the presence of the cicisbeo, the official escort of another man's wife. Did this delineate a clear and brazen sexual depravity or rather a complex and refined social institution, revealing many aspects of Italian civilization in the Age of the Enlightenment? Not only was the presence of a cicisbeo part of a matrimonial, family model; it was also an important factor socially and politically. In a period in which the presence of women at parties was sought -...