Prince Bernadotte is a title that has been used by several members of the House of Bernadotte. It is most commonly known as a title granted to men who were formerly titled as princes of Sweden before losing their royal titles when they married unequally and against the Swedish constitution (enskild mans dotter [approximately "daughter of a common man"]). It was created in 1892 as a non-hereditary title in the nobility of Luxembourg and conferred upon Oscar Bernadotte by Adolphe, Grand Duke of Luxembourg. A title with the same name was subsequently created in 1937 as a non-hereditary title in the nobility of Belgium and conferred upon Carl Bernadotte by King Leopold III of Belgium. The wives of these princes of Luxembourgish and Belgian nobility were then granted the title of Princess Bernadotte. The title was also used in the early 19th century with reference to Jean Baptiste Jules Bernadotte, the subsequent founder of the Swedish royal House of Bernadotte.