"Princess Alexandra Victoria of Schleswig-Holstein-Sonderburg-Glücksburg (21 April 1887 – 15 April 1957) was a daughter of Friedrich Ferdinand, Duke of Schleswig-Holstein and his wife Princess Karoline ...
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Mathilde of Schleswig-Holstein-Sonderburg-Augustenburg.[citation needed]" - (en.wikipedia.org 23.01.2021)
