Margarete von Holstein-Gottorp, Herzogin von Oldenburg (born 1954) (b. 1954) Parents Gertrud Prinzessin zu Löwenstein-Wertheim-Freudenberg Duke Peter of Oldenburg Children Princess Rosalie of Croÿ Prince Maximilian of Croÿ Prince Alexander of Croÿ Siblings Nikolaus von Holstein-Gottorp, Herzog von Oldenburg Duke Friedrich August of Oldenburg Georg-Moritz von Holstein-Gottorp, Herzog von Oldenburg Partners Prince Philipp of Croÿ