Prince Bernadotte was a title in the nobility of Belgium, conferred upon Carl Bernadotte by Leopold III of Belgium on 6 July 1937. Carl Bernadotte was born Prince of Sweden and Duke of Östergötland, but gave up those titles when he married morganatically in 1937. King Leopold was married to Carl's sister Astrid of Sweden and conferred the noble title on his brother-in-law on the day of Carl's marriage.
In Sweden, the princely Bernadotte family was considered a part of the unintroduced nobility and were members of Ointroducerad Adels Förening ("The Association of the Unintroduced Nobility"). That title is now extinct, as it was personal to Carl Bernadotte and his wives. His heirs were designated to be Counts or Countesses Bernadotte. Carl had only one child, Countess Madeleine Bernadotte.
Oscar Bernadotte was no longer allowed to use his titles as Prince of Sweden and Duke of Gotland after he married morganatically in 1888 but was allowed by his father King Oscar II to keep the title Prince and then be styled Prince Bernadotte. He was created Count of Wisborg by his maternal uncle Grand Duke Adolphe of Luxembourg in 1892.
The title was thus mentioned by monarchs of Luxembourg for the first four original Counts of Wisborg (Oscar and three grandnephews) who were named in government documents, when they were ennobled in Luxembourg, as Oscar, Sigvard, Carl Johan and Lennart Prince Bernadotte, respectively, when that occurred in 1892 and 1951 and included their wives. As their Luxemburg titles, however, the younger three of the four normally went by Count of Wisborg (the title also conferred upon their heirs), rather than a personal title of Prince Bernadotte. Two of their widows survive (2016).
The title was a noble title (i.e. prince as a high rank of nobility), not a royal title.
- von Rothstein, Niclas, ed. (2009). Kalender över Ointroducerad adels förening (in Swedish) (22nd ed.). Ointroducerad Adels Förening. p. 25. ISBN 978-91-633-5038-2.
- Bramstång, Gunnar (1990). Tronrätt, bördstitel och hustillhörighet (in Swedish). p. 30.
- Sveriges statskalender (in Swedish). 1905. p. 2.
- Lettres Patentes du Grand Duc Adolphe 1892-04-02
- Mémorial du Grand Duché de Luxembourg 1951-08-13 p 1135