uncle Martin of Aragon came to inherit the throne of Aragon). Martin died without surviving issue in 1410, and after two years without a king, the Estates of Aragon elected Ferdinand, the second son of Eleanor of Aragon and John I of Castile, as the next King of Aragon. The Anjou candidate for the throne of Aragon was Yolande's eldest son Louis III of Anjou, Duke of Calabria, whose claim was forfeited in the Pact of Caspe. Yolande and her sons regarded themselves as the heirs with the stronger claim, and began to use the title of Kings of Aragon. As a result of this additional inheritance, Yolande was called the "Queen of Four Kingdoms" - the four apparently Sicily, Jerusalem, Cyprus and Aragon. Another interpretation specifies Naples separate from Sicily, plus Jerusalem and Aragon. The number could be raised to seven if the two component kingdoms of the Crown of Aragon (Majorca and Valencia) and Sardinia were included. However, the reality was that Yolande and her family controlled territories in these kingdoms only at short intervals, if ever. Their true realm was the Anjou fiefdoms across France: they held uncontestably the provinces of Provence and Anjou, and also at times Bar, Maine, Touraine and Valois. Yolande's son René I of Anjou became ruler of Lorraine through his marriage to Isabella, Duchess of Lorraine. France and the House of Anjou In the emerging second phase of the Hundred Years' War, Yolande chose to support the French (in particular the Armagnac party) against the English and the Burgundians. After John the Fearless, Duke of Burgundy, instigated a mob attack on the Dauphin of France in 1413, she and her husband repudiated the engagement of their son Louis to John's daughter Catherine of Burgundy, which placed them decisively in the Armagnac camp. In the same year, Yolande met with Queen Isabeau of France to finalize a marriage contract between her daughter Marie and Isabeau's third surviving son Charles. After his two older brothers died, she supported the claim of the Dauphin Charles who, relying upon Yolande's resources and help, succeeded in becoming crowned Charles VII of France. As Charles' own mother, Queen Isabeau, worked against his claims, it has been said that Yolande was the person who protected the adolescent Charles against all sorts of plots on his life and acted as a substitute mother. She removed Charles from his parents' court