The Order of Saint Joachim was recognized in the late 18th and early 19th centuries by several contemporary sovereigns and states. Leopold II, King of Hungary and Bohemia (later Holy Roman Emperor) formally acknowledged and sanctioned the wearing of the insignia of the Order on May 23, 1790 with a document of Royal Concession. He appointed the Comte Christian von Leiningen, a knight of The Order of Saint Joachim and relative of the Grand Master, to be Chamberlain of the Imperial Palace.