Career
Her older brother Peter was the Duke of Schleswig-Holstein and Head of the House of Oldenburg from 10 February 1965 until his death on 30 September 1980. Titles and styles 9 July 1927 – 14 December 2000: Her Highness Princess Marie Alexandra of Schleswig-Holstein-Sonderburg-Glücksburg Royal Patron - the Order "Ordo Supremus Militaris Templi Hierosolymitani" (OSMTH) A United Nations Non-Governmental Organization (non-governmental organization) registered in Geneva, Switzerland. Swiss Federal Registry Number Companies of Honour-660.1.972.999-4.