Of the Current European Monarch from oldest to youngest
Harald V of Norway aged 85
Heir : Crown Prince Haakon aged 49
Margrethe II of Denmark aged 82
Heir : Crown Prince Frederick aged 54
Hans-Adam II, Prince of Liechtenstein aged 77
Heir : Alois, Hereditary Prince of Liechtenstein aged 54
Carl XVI Gustaf of Sweden ,aged 76
Heir : Crown Princess Victoria of Sweden, Duchess of Västergötland aged 45
Charles III of the Untied Kingdom aged 74
Heir : William, Prince of Wales aged 40
Henri, Grand Duke of Luxembourg aged 67
Heir : Guillaume, Hereditary Grand Duke of Luxembourg aged 41
Albert II, Prince of Monaco aged 64
Heir : Jacques, Hereditary Prince of Monaco, Marquis of Baux aged 8
King Philippe of Belgium aged 62
Heir : Princess Elisabeth, Duchess of Brabant aged 21
Willem-Alexander ,King of the Netherlands aged 55
Heir : Catharina-Amalia, Princess of Orange aged 19
King Felipe VI of Spain
Heir : Leonor, Princess of Asturias aged 17