 All five children survived into adulthood and made illustrious marriages; all but Joan produced offspring of their own.When King John died in October 1216, Isabella's first act was to arrange the speedy coronation of her nine-year-old son at the city of Gloucester on 28 October.As the royal crown had recently been lost in The Wash, along with the rest of King John's treasure, she supplied her own golden circlet to be used in lieu of a crown.