Johanna I. von Kastilien, genannt Johanna die Wahnsinnige (span.Juana I de Castilla bzw.Juana la Loca; * 6.November 1479 in Toledo; † 12. April 1555 in Tordesillas), aus dem Hause Trastámara war ab 1504 Königin von Kastilien und ab 1516 Königin der Reiche der Krone von Aragonien.
Mary Tudor may refer to: Mary Tudor, Queen of France (1496–1533), queen of France and princess of England; daughter of Henry VII, wife of Louis XII and then of Charles Brandon, Duke of Suffolk Mary I of England (1516–1558), queen of England and Spain – daughter of Henry VIII and Catherine of Aragon
This list contains all European emperors, kings and regent princes and their consorts as well as well-known crown princes since the Middle Ages, whereas the lists are starting with either the beginning of the monarchy or with a change of the dynasty (e.g. England with the Norman king William the Conqueror, Spain with the unification of Castile and Aragon, Sweden with the Vasa dynasty, etc.).