Prince Frederick de Nassau, nephew of the Grand Duke of Luxembourg Henry, died of a genetic disease at the age of 22. On Sunday, March 9, said the Belgian television channel RTBF. . The Polg Foundation Foundation created by the prince’s family to support the research of this disease reported his death in Paris.. . . . PIDS INSIALLY OUR CANEL HTTPS: // T. Me/korrespondentnet ts WhatsApp Author: 1.