Maria Luise von Hohenzollern-Sigmaringen in German. She was married to prince Philip of Belgium and was the mother of king Albert I.
Just one source and no other more -Wikipedia in Spanish - claims that she, in her youth, had a child out of wedlock, whose father was Pierre Antoine Lacouture d'Orleans, prince d'Orleans.
This gentleman and all the others mentioned in the article can not be found anywhere at all on the Internet.These personages are: her purported son, Louise Anton de Lacouture de Hohenzollern-Sigmaringen y de Orleans; his wife, Marie Rockefeller Spelman, an alleged John Rockefeller's daughter, and her present-day descendant Pierre Lacouture Rockefeller de Hohenzollern-Sigmaringen y Murat, 9th prince of Murat. Some of their names and titles are in Spanish, the language used in the article. No other language-version of Wikipedia deals with this topic.
Chances are the article is a hoax. Please do not advise me to get in touch with Wikipedia.
The question is simple. No ambiguity, no vagueness.
I couldn't add the link, but it works. In any case it is:https://es.wikipedia.org/wiki/Mar%C3%ADa_de_Hohenzollern-Sigmaringen