Isabeau of Bavaria (or Isabelle; also Elisabeth of Bavaria-Ingolstadt; c. 1370 – September 1435) was Queen of France from 1385 to 1422. She was born into the House of Wittelsbach as the only daughter of Duke Stephen III of Bavaria-Ingolstadt and Taddea Visconti of Milan. At age 15 or 16, Isabeau was sent to France to marry the young King Charles VI; the couple wed three days after their first meeting. Isabeau was honored in 1389 with a lavish coronation ceremony and entry into Paris. In 1392, Charles suffered the first attack of what was to become a lifelong and progressive mental illness, resulting in periodic withdrawal from government. The episodes occurred with increasing frequency, leaving a court both divided by political factions and steeped in social extravagances. A 1393 masque for one of Isabeau's ladies-in-waiting—an event later known as Bal des Ardents—ended in disaster with the King almost burning to death. Although the King demanded Isabeau's removal from his presence during his illness, he consistently allowed her to act on his behalf. In this way she became regent to the Dauphin of France (heir apparent), and sat on the regency council, allowing far more power than was usual for a medieval queen. Charles' illness created a power vacuum that eventually led to the Armagnac–Burgundian Civil War between supporters of his brother, Duke Louis I of Orléans, and the royal dukes of Burgundy. Isabeau shifted allegiances as she chose the most favorable paths for the heir to the throne. When she followed the Armagnacs, the Burgundians accused her of adultery with Louis of Orléans; when she sided with the Burgundians, the Armagnacs removed her from Paris and she was imprisoned. In 1407, John the Fearless, duke of Burgundy, assassinated Orléans, sparking hostilities between the factions. The war ended soon after Isabeau's eldest son, Charles, had John the Fearless assassinated in 1419—an act that saw him disinherited. Isabeau attended the 1420 signing of the Treaty of Troyes, which decided that the English king should inherit the French crown after the death of her husband, Charles VI. She lived in English-occupied Paris until her death in 1435. Isabeau was popularly seen as a spendthrift and irresponsible philanderess. In the late 20th and early 21st centuries historians re-examined the extensive chronicles of her lifetime, concluding that many unflattering elements of her reputation were unearned and stemmed from factionalism and propaganda. Lineage and marriage