House of Bourbon-Parma
The daughter of Paul-Annik, Sibilla Weiller married in 1994 Prince Guillaume of Luxembourg, Prince of Nassau and Parma, youngest son of Grand Duke Jean of Luxembourg (descendants and heirs of the House of Nassau-Weilburg, agnatically, now a cadet branch of the House of Bourbon-Parma, itself a cadet branch of the House of Capet)