He is the eldest son of Antoine, 13th Prince de Ligne, and his wife, Princess Alix of Luxembourg; he is thus a nephew of the late Jean, Grand Duke of Luxembourg, and a cousin of reigning Grand Duke Henri.
He is the eldest son of Antoine, 13th Prince de Ligne, and his wife, Princess Alix of Luxembourg; he is thus a descendant of Jean, Grand Duke of Luxembourg, and related to reigning Grand Duke Henri through kinship.