To receive duke title indicates that you will be trusted with a new position.
Dream dictionary: Duke dream meanings
…Should anybody be so foolish as to dream that they are created a Duke, an Earl, or that they have conferred upon them any patent of nobility, it is a sign of shiftlessness and poverty. If a girl dreams that a lord is in love with her, she will be apt to marry a shiftless and needy fellow. Lucky lottery dream numbers – 21, 19….
Should anybody be so foolish as to dream that they are created a Duke, an Earl, or that they have conferred upon them any patent of nobility, it is a sign of shiftlessness and poverty. If a girl dreams that a lord is in love with her, she will be apt to marry a shiftless and needy fellow.