Adele Bloch-Bauer
In Republic of Austria v. Altmann in 2004, Adele Bloch-Bauer's niece, Maria Altmann, tried to get the painting back from the Belvedere Gallery.  The Supreme Court said the painting was Altmann's.  Because Aultmann could not pay for insurance and storage, she sold the painting to Ronald Lauder to put in the Neue Gallery in New York City.