Jean (given names: Jean Benoît Guillaume Robert Antoine Louis Marie Adolphe Marc d'Aviano; born 5 January 1921) reigned as Grand Duke of Luxembourg from 1964 until his abdication in 2000. He is the father of the current ruler, Grand Duke Henri, and the son of Grand Duchess Charlotte and Prince Felix of Bourbon-Parma. Among his godparents was Pope Benedict XV, who gave him his second name.