 In 1429 , when Isabeau lived in English @-@ occupied Paris , the accusation was again put forth that Charles VII was not the son of Charles VI . At that time , with two contenders for the French throne — the young Henry VI and disinherited Charles — this could have been propaganda to prop up the English claim . Furthermore , gossip spread that Joan of Arc was Isabeau and Orleans ' illegitimate daughter — a rumor Gibbons finds improbable because Joan of Arc almost certainly was not born for some years after Orléans ' assassination . Stories circulated that the dauphins were murdered , and attempts were made to poison the other children , all of which added to Isabeau 's reputation of one of history 's great villains . 
