Princess Beatrice of Guldenhorf
The Grand Duchy of Guldenhorf is a nominally independent grand duchy under the suzerainty of Tristain. (Based off the Grand Duchy of Luxembourg when it was under the suzerainty of the United Kingdom of the Netherlands (Which was basically the Netherlands Belgium and Luxembourg))
Its ruler is the Grand Duke of Guldenhorf. Beatrice is a princess of Guldenhorf.