I guess Victoria was the last Hanoverian - the next dynasty (which we still "enjoy") was Saxe-Coburg-Gotha, changed to "Windsor" by George V to distance his family from all the other German (or more accurately, Prussian or other Teutonic) crowned heads of Europe - notably Kaiser Wilhelm II. In any event, "Windsorian" is easier to say than "Saxe-Coburg-Gothan"!