Bildnachweis
Portrait of Lady Mary Douglas-Hamilton (1850-1922, later Princesse de Monaco, Fürstin Festetics von Tolna)
Franz Xaver Winterhalter
got it from Alexander Palace and guessing it's public domain [1]
Bildquelle: File:Undated image of Lady Mary Victoria Douglas-Hamilton, (1850-1922) future Hereditary Princess of Monaco.jpg · Lizenz: Public domain
Für die Darstellung in der Größe angepasst.