found: Wir Maria Theresia, von Gottes Gnaden römische Kaiserinn, Wittib, Königinn zu Hungarn ... 1773(name not given; inscription in NN copy: "A Son Altesse Serenissime monseigneur le prince Louis, duc de Brunsvic-Lunebourg-Wolffenbüttel &c &c &c, Veld Marechal General &c &c &c à La Haye")
found: Allgemeine deut. Biogr./Neue deut. Biogr. (WWW), June 22, 2009:digitales Register (Ludwig Ernst, 1718-1788; Herzog von Braunschweig-Lüneburg; österreichischer und niederländischer Reichfeldmarschall) ADB (Ludwig Ernst, Herzog zu Braunschweig und Lüneburg, b. Wolfenbüttel, Sept. 22, 1718, d. May 12, 1788)
found: Die Welfen Web site, June 22, 2009(Ludwig Ernst (1718-1788) Herzog zu Braunschweig-Wolfenbüttel-Bevern; brother of reigning Duke Karl I, 1713-1780; Duke of Courland, 1741; Austrian field marshal in 2nd Silesian War; captain-general, regent and Statthalter of the Netherlands from 1751) - http://www.welfen.de/LudErnst.htm found: German Wikipedia Web site, June 22, 2009(Ludwig Ernst von Braunschweig-Wolfenbüttel; b. Wolfenbüttel, Sept. 25, 1718, d. Eisenach, May 12, 1788; captain-general of the Netherlands, 1751-1766)
found: English Wikipedia Web site, June 22, 2009(Duke Louis Ernest of Brunswick-Lüneburg; Ludwig Ernst von Braunschweig-Lüneburg-Bevern; Captain-General of the Netherlands, where he was known as the Duke of Brunswick or (to distinguish him from his eldest brother Charles, who succeeded to their father's title of Duke of Brunswick-Bevern) Duke of Brunswick-Wolfenbüttel)
found: Biografisch woordenboek van noord en zuid, 1941, via DBNL Web site, June 22, 2009(Lodewijk Ernst, hertog van Brunswijk-Wolffenbuttel; Brunswijk-Wolffenbuttel, Lodewijk Ernst, hertog van -, 1717-'88; subject of many pamphlets and dramas)
found: Encyclopedia Britannica (WWW), June 22, 2009 (in article William V, prince of Orange and Nassau, 1751-95: Duke Louis Ernest of Brunswick-Wolfenbüttel (1718-88) acted as William's guardian)
found: OCLC, June 22, 2009(hdgs.: Brunswijk-Wolfenbüttel, Lodewijk Ernst van; Louis Ernest, Duke of Brunswick-Wolfenbüttel, 1718-1788; Louis, Duke of Brunswick-Wolfenbüttel; Ludwig Ernst, Herzog von Braunschweig Wolffenbüttel; Ludwig Ernst, hertog van Braunschweig Wolffenbüttel, 1718-1788; Ludwig Ernst, Duke of Brunswick-Lüneburg, 1718-1788; Ludwig Ernst, duke of Brunswick and Luneberg, 1718-1788; Ludwig Ernst, Braunschweig-Lüneburg, Herzog; etc.)
found: VIAF, accessed July 31, 2021VIAF ID: 18034264 (Personal) (hdg.: Ludwig Ernst, hertog van Braunschweig-Wolfenbüttel, 1718-1788; Ludwig Ernst 1718-1788 Duke of Brunswick-Lüneburg; Ludwig Ernst von Braunschweig-Wolfenbüttel; Ludwig Ernst Braunschweig-Lüneburg, Herzog 1718-1788; Brunswick-Wolfenbüttel, Louis Ernest de auteur prétendu 1718-1788; Ludwig Ernst, Duke of Brunswick-Lüneburg, 1718-1788; Ludwig Ernst, Herzog zu Brunswick und Lüneburg, 1718-1788) - http://viaf.org/viaf/18034264 found: Certificatie van den lyfmedicus van Philip, Prins van Wolvenstein, 1781?:title page (Philip Prins van Wolvenstein; Hertog Lodewyk van Brunswyk)
found: British Museum general catalogue of printed books, 1984, volume 257, p. 254(entry: Philip, Prince of Wolvenstein [i.e. E. L. Duke of Brunswick])
found: British Museum general catalogue of printed books, 1984, volume 102, p. 225(entry: Ernest Louis, Duke of Brunswick)
