Knights Grand Cross and Knights Commander prefix "Sir", and Dames Grand Cross and Dames Commander prefix "Dame", to their forenames. Wives of Knights may prefix "Lady" to their surnames, but no equivalent privilege exists for husbands of Dames. Such forms are not used by peers and princes, except when the names of the former are written out in their fullest forms. Furthermore, honorary foreign members and clergymen do not receive the accolade of knighthood, and so are not entitled to the prefix "Sir", unless the former subsequently become Commonwealth citizens.