In 2016, he sold the family art collection held in the Czartoryski Museum to the Polish state for approximately €100 million.

[1] He is the head of the Polish House of Czartoryski, descendants of Gediminas (died 1341), ruler of the Grand Duchy of Lithuania.

Returning to his native Spain at the end of the sixties, Czartoryski continued his Karate training under the guidance of Japanese Sensei Yasunari Ishimi.

[2] In 1976 the Chinese government gave sports medals to Adam Czartoryski Bourbon and Fernando Compte, president of the Spanish Wrestling Association.

[6] In 1997 Czartoryski noticed the sale at Sotheby's of a painting by the Dutch artist Jan Mostaert named Portrait of a Lady, Presumably Anne of Bretagne, which he claimed to have come from his family's looted art collection.

[5] In December 2016 he sold the Czartoryski collection to the Polish state at an extremely low price in a transaction that drew some criticism and resulted in legal battles.

The original goal was to preserve Poland's cultural heritage, but later objects from around the world were added, including items looted from the camp of the Ottoman Sultan after the 1683 Battle of Vienna.

[13] In 1798 Prince Adam Jerzy Czartoryski, Izabela's son, visited Italy where he bought Leonardo da Vinci's Lady with an Ermine and Raphael's Portrait of a young man.

[13] When the Germans invaded Poland that year, Augustyn Józef Czartoryski had the most valuable items hidden beneath the baroque Sieniawski family castle, while others were stored in the cellar of the museum.

[14] After the war the Polish representative at the Allies Commission for the Retrieval of Works of Art found many of the stolen paintings and claimed them for the Czartoryski Museum.

[11] The Princes Czartoryski Museum in Kraków was closed for extensive renovations in 2010, including adding a glass and steel roof to a courtyard that was not being used.

The foundation obtained funding for the works from Norway Grants, local and national government authorities and loans to foreign exhibitions of the Lady with an Ermine, but by the end of 2016 had run out of money, while the project would cost about €6.9 million to complete.

[11] Czartoryski decided to entrust his collection to the Polish Nation, including the Lady With An Ermine, Landscape with the Good Samaritan and works by Pierre-Auguste Renoir.

[2] Despite this, the state's purchase was criticized on the grounds that the money could have been better spent to preserve threatened Polish heritage sites, such as derelict manor houses.