Prince Lennart of Sweden, Gustaf Lennart Nicolaus Paul (born May 8, 1909), Duke of Smalandia, was the son of Prince Wilhelm of Sweden and his wife Grand Duchess Maria Pavlovna of Russia. He was born at the Royal Palace in Stockholm.
Under the Swedish Act of Succession a prince or princess marrying without the consent of the Sovereign forfeits the right of succession for themselves, their children and their descendants. They give up their titles and assume the family name of Bernadotte. By his marriage on March 11, 1932 he was subsequentially stripped of his title and became Mr. Lennart Bernadotte.
Since 1868, Swedish princes who have lost their succession rights have received noble titles confered by the reigning Grand Duke or Grand Duchess of Luxembourg, or in one case by the King of Belgium. Thus on ennoblement by the Grand Duchess Charlotte of Luxembourg, on July 2, 1951 he became Lennart Bernadotte, Count of Wisborg
Recently he began to use the style Prince Lennart Bernadotte, without consent of the Swedish Royal Court. King Carl XVI Gustaf of Sweden, who lost the right to confer noble titles in the new constitution of 1974, does still retain the prerogative to restore royal titles, but has chosen not to do so.
He concentrates his energy on his estate, the island of Mainau in Lake Constance, Germany and the his charitable fund, the "Lennart Bernadotte Stiftung".
See also: Dukes of Swedish Provinces