 The latter was never punished for his role in Louis' assassination, and Charles had to watch as his grief-stricken mother Valentina Visconti succumbed to illness not long afterwards.At her deathbed, Charles and the other boys of the family were made to swear the traditional oath of vengeance for their father's murder.During the early years of his reign as duke, the orphaned Charles was heavily influenced by the guidance of his father-in-law, Bernard VII, Count of Armagnac, for which reason Charles' faction came to be known as the Armagnacs.