* Autour des trônes que j’ai vu tomber by Princesse Louise de Belgique (Paris, 1921). Translated into English by Maude M. C. ffoulkes as My Own Affairs (London, 1924). The page numbers given here refer to the original French edition of the book and all passages from it are newly translated.

† Aus den letzten Jahren: Memoiren by Count Géza Mattachich-Keglevich (Leipzig, 1904).

‡ The relationship between Mattachich and Maria Stöger is documented, along with much else, in Gerd Holler’s biographical study Louise von Sachsen-Coburg: Ihr Kampf um Liebe und Glück (Vienna–Munich, 1991). In his memoirs Mattachich refers to Maria Stöger only twice: once by name, once anonymously. Louise does not refer to her at all in her autobiography.