腓特烈·威廉四世
The title of a "Duke of Ratibor" was acquired by Landgrave Victor Amadeus of Hesse-Rotenburg in 1821. King Frederick William IV of Prussia in 1840 granted it to the landgrave's nephew Prince Victor of Hohenlohe-Schillingsfürst, in turn for his renunciation of the Hohenlohe inheritance in favour of his younger brother Chlodwig.