Louis I, Duke of Orléans
20th-century historians have determined that Pintoin was responsible for the vilification of Isabeau of Bavaria that has persisted since the time of his writing. A passage in his chronicle suggests she was the lover of her brother-in-law Louis I, Duke of Orléans, an allegation perpetuated in other chronicles and writing of the early 15th century. Historian Rachel Gibbons believes Pintoin's writing may have been pro-Burgundian propaganda; Tracy Adams writes that Pintoin's allegation of an incestuous union with the Duke of Orléans led her detractors not only to believe but to fabricate additional untruths about the queen.