On three occasions the English Parliament was held here at Leicester Castle’s Great Hall. One of those, in 1426, became known as the Parliament of Bats. Tensions were so high between Cardinal Beaufort, the Bishop of Winchester and the Lord Chancellor that the men were not allowed to carry swords. Instead, they armed themselves with bats. 

Henry VI was an infant at this time, and the session saw him knighted in St. Mary De Castro Church. Henry was the only child and heir of King Henry V. He was born on 6 December 1421 at Windsor Castle. He succeeded to the throne as King of England the day after his father's death on 1 September 1422 at the age of nine months. He was the youngest person ever to succeed to the English throne.