to persist for many years, Isabeau succeeded in her role as peacekeeper among the various court factions. As early as the late 1380s and early 1390s, Isabeau demonstrated that she possessed diplomatic influence when the Florentine delegation requested her political intervention in the Gian Galeazzo Visconti affair. Orléans and the Duke of Burgundy were in the pro-Visconti faction while the anti-Visconti faction included Isabeau, her brother, Louis VII, Duke of Bavaria, and John III, Count of Armagnac. At that time Isabeau lacked the political power to effect change. Some years later, however, at the 1396 wedding of her seven-year-old daughter, Isabella, to Richard II of England (an event at which Charles attacked a herald for wearing Galeazzo's livery), Isabeau successfully negotiated an alliance between France and Florence with Florentine ambassador Buonaccorso Pitti. In the 1390s Jean Gerson of the University of Paris formed a council to eliminate the Western Schism, and in recognition of her negotiating skills he placed Isabeau on the council. The French wanted both the Avignon and Roman popes to abdicate in favor of a single papacy in Rome; Clement VII in Avignon welcomed Isabeau's presence given her record as an effective mediator. However, the effort faded when Clement VII died. During his short-lived recovery in the 1390s, Charles made arrangements for Isabeau to be "principal guardian of the Dauphin", their son, until he reached 13 years of age, giving her additional political power on the regency council. Charles appointed Isabeau co-guardian of their children in 1393, a position shared with the royal dukes and her brother, Louis of Bavaria, while he gave Orléans full power of the regency. In appointing Isabeau, Charles acted under laws enacted by his father, Charles V, which gave the Queen full power to protect and educate the heir to the throne. These appointments separated power between Orléans and the royal uncles, increasing ill-will among the factions. The following year, as Charles' bouts of illness became more severe and prolonged, Isabeau became the leader of the regency council, giving her power over the royal dukes and the Constable of France, while at the same time making her vulnerable to attack from various court factions. During Charles' illness, Orléans became financially powerful as the official tax collector, and in the following decade Isabeau and Orléans agreed to raise the level of taxation. In 1401, during one of the King's absences, Orléans installed his