sister louis vii
___MASK76___ ( or Isabelle ; also Elisabeth of Bavaria - Ingolstadt ; c . 1370  24 September 1435 ) was born into the House of Wittelsbach as the eldest daughter of Duke Stephen III of Bavaria - Ingolstadt and Taddea Visconti of Milan . She became Queen of France when she married King Charles VI in 1385 . At age 15 or 16 , Isabeau was sent to France on approval to the young French king ; the couple wed three days after their first meeting . ___MASK55___ , Duchess of Bavaria ( 1351  28 September 1381 ) was an Italian noblewoman of the Visconti family , the ruling house in Milan from 1277 to 1447 . She was the first wife of Stephen III , Duke of Bavaria , and the mother of the French queen ___MASK76___ . Duke Louis VII of Bavaria ( c . 1368 -- 1 May 1447 , Burghausen ) ( German : Ludwig VII . der Bärtige , Herzog von Bayern ) was Duke of Bavaria - Ingolstadt from 1413 until 1443 . He was a son of Stephen III and ___MASK55___ .