Princess Marie-Esméralda of Belgium
Belgian princess, youngest child of Leopold III of Belgium and Lilian, Princess of Réthy

Princess Marie-Esméralda of Belgium, Lady Moncada (born 30 September 1956), is a member of the Belgian royal family. She is the half-aunt of King Philippe of Belgium and Henri, Grand Duke of Luxembourg. Princess Marie-Esméralda is a journalist, author, documentary-maker, environmental activist and a campaigner for the rights of women and indigenous people.
Family
Princess Marie-Esméralda is the youngest child of the late Leopold III of Belgium and his second wife, Lilian Baels, Princess of Réthy. Her full siblings are the late Prince Alexandre of Belgium and Princess Marie-Christine of Belgium. Her half-siblings include the late King Baudouin of Belgium, former King Albert II of Belgium (who is also Marie-Esméralda's godfather), and the late Grand Duchess Joséphine-Charlotte of Luxembourg from her father's marriage to his first wife, Queen Astrid.
Princess Marie-Esméralda of Belgium married Sir Salvador Moncada, a Honduran-British pharmacologist, in London on 5 April 1998. They have a daughter, Alexandra Léopoldine Moncada (born in London on 4 August 1998), and a son, Leopoldo Daniel Moncada (born in London on 21 May 2001).
Career
Princess Marie-Esméralda is a journalist and author, writing under the name Esmeralda de Réthy. After studying law at the Université Saint-Louis - Bruxelles, she graduated in journalism at Université catholique de Louvain in Louvain-la-Neuve and then moved to Paris to pursue her career, working freelance for international magazines.
“Princess Marie-Esméralda of Belgium” enters the record as belgian princess, youngest child of Leopold III of Belgium and Lilian, Princess of Réthy. Crown Archives preserves that source wording while asking what Princess, Marie-Esméralda and Belgium can confirm, complicate or overturn.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 21, 2026. The linked authority identifier is Q371203. VIAF identifies the subject as 36597936. The Library of Congress control number is no2003007131. 1 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1956, 1998 and 2001.
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This entry incorporates text from “Princess Marie-Esméralda of Belgium” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.