St. Louis | St. Louis Cardinals | Duke University | Louis Armstrong | Duke Ellington | Louis Vuitton | Robert Louis Stevenson | Duke | Louis XIV of France | Duke of Wellington | St. Louis County, Minnesota | Joe Louis | Prince William, Duke of Cambridge | Louis IX of France | Louis Pasteur | Louis Mountbatten, 1st Earl Mountbatten of Burma | Duke of York | Saint Louis University | Washington University in St. Louis | Jacques-Louis David | Engelbert Humperdinck | Louis XIII of France | Louis XV of France | St. Louis Rams | Duke of Norfolk | Saint Louis | Louis XVI of France | Louis Agassiz | Engelbert Humperdinck (singer) | Duke of Edinburgh |
In 1801, Louis Engelbert, Duke of Arenberg, Prosper's father, lost the former Duchy of Arenberg on the left bank of the Rhine but received a larger duchy on the right bank in 1803.