Prince Xavier died in 1977. He was a member of the Polish royal family and the son of Prince Józef Antoni Poniatowski and Princess Ludwika Maria Czartoryska. He served as a general in the Polish Army during the Napoleonic Wars and later became a politician. He died in exile in France at the age of 70.
Prince Xavier, Hereditary Duke of Parma Quiz: How Much Do You Really Know About Prince Xavier, Hereditary Duke of Parma?