"What do these base and ignoble knights attempt?" cried John of Gaunt. "Do they think they be kings or princes of the land?" But the movement was too strong to be stayed. Even the Duke was silenced by the charges brought against the ministers. After a strict enquiry Latimer and Lyons were alike thrown into prison, Alice Perrers was banished, and several of the royal servants were driven from the Court. At this moment the death of the Black Prince shook the power of the Parliament. But it only heightened its resolve to secure the succession. His son, Richard of Bordeaux, as he was called from the place of his birth, was now a child of but ten years old; and it was known that doubts were whispered on the legitimacy of his birth and claim. An early marriage of his mother Joan of Kent, a granddaughter of Edward the First, with the Earl of Salisbury had been annulled; but the Lancastrian party used this first match to throw doubts on the validity of her subsequent union with the Black Prince and on the right of Richard to the throne. The dread of Lancaster's ambition is the first indication of the approach of what was from this time to grow into the great difficulty of the realm, the question of the succession to the Crown. From the death of Edward the Third to the death of Charles the First no English sovereign felt himself secure from rival claimants of his throne. As yet however the dread was a baseless one; the people were heartily with the Prince and his child. The Duke's proposal that the succession should be settled in case of Richard's death was rejected; and the boy himself was brought into Parliament and acknowledged as heir of the Crown. [Sidenote: Wyclif and John of Gaunt]