Prince Ludwig Ernst of Brunswick-Wolfenbüttel

Louis Ernest of Brunswick-Lüneburg-Bevern (25 September 1718, – 12 May 1788) was a field-marshal in the armies of the Holy Roman Empire and the Dutch Republic, the elected Duke of Courland (1741). From 13 November 1750 to 1766 he was the Captain-General of the Netherlands, where he was known as the Duke of Brunswick or (to distinguish him from his eldest brother Charles.