Isabeau of Bavaria (or Isabelle; also Elisabeth of Bavaria-Ingolstadt; c. 1370 – 24 September 1435) was Queen of France as the wife of King Charles VI 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 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 Charles 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 her far more power than was usual for a medieval queen consort.
