When the army was retreating Sigismund was attacked and Cecilia intervened, saving the life of the Hungarian king. [citation needed] 1428: Philippa of England, Queen of Denmark, successfully organized the defence of Copenhagen against the Hanseatic League, a heroic feat later recounted by Hans Christian Andersen in Godfather's Picture Book (1868).[94] 1429: Joan of Arc asserts that God has sent her to drive the English out of France, and is given a position in the French Royal army.[95] She is supported by Yolande of Aragon, mother of Queen Marie d'Anjou (wife of King Charles VII).[96] 1433: Ida Königsmarck legendary defense her fief Kastelholm Castle on Åland in Swedish Finland during the Engelbrekt rebellion.[97] 1451–1452 : Brita Tott serves as a spy in the war between Sweden and Denmark[98] 1455: Elise Eskilsdotter leads a war against the German merchant class of Bergen in Norway as revenge for the murder of her spouse, by means of her pirate fleet.[99] 1461: Queen Margaret of Anjou defeats the Earl of Warwick in the Wars of the Roses.[citation needed] 1461: Lady Knyvet defends Buckingham Castle at Norfolk against Sir Gilbert of Debenhem.[100] 1467: Ólöf Loftsdóttir personally leads the war against the English on Iceland.,[101] 1470: Joanna of Rožmitál leads the Czech army in war.[citation needed] 1471: Queen Margaret of Anjou is defeated in Battle of Tewkesbury. She and her son escaped to Flanders.