Their Royal Highnesses The Duke and Duchess of Gloucester.
On 1 May 2011, His Holiness Pope Benedict XVI will preside at the Beatification of His Holiness Pope John Paul II in St. Peter's Square.
Their Royal Highnesses The Duke and Duchess of Gloucester will represent Her Majesty The Queen as Head of State of the United Kingdom.
The ceremony will be attended by senior figures from Europe and more widely, including Heads of State and Government. Hundreds of thousands of pilgrims are also expected.
His Royal Highness The Duke of Gloucester is a grandson of George V and first cousin to H.M. The Queen.