Alois-Konstantin Prince of Löwenstein-Wertheim-Rosenberg full German name: Alois Konstantin Karl Eduard Joseph Johann Konrad Antonius Gerhard Georg Benediktus Pius Eusebius Maria Fürst zu Löwenstein-Wertheim-Rosenberg (born 16 December 1941 in Würzburg Bavaria) is a German businessman and since 1990 the head of the mediatised House of Löwenstein-Wertheim-Rosenberg the catholic cadet line of the Princes of Löwenstein-Wertheim itself the patrilineally senior but morganatic branch of the royal house of Wittelsbach which ruled the Kingdom of Bavaria until 1918.