The couple's families

Britain's Queen Elizabeth II, right, accompanied by her grandsons, Prince William, left, and Prince Harry, center, stand on the main balcony of Buckingham Palace, while attending the annual Trooping the Colour, in central London, Saturday June 13, 2009. The Queen celebrates her official birthday Saturday with the Trooping the Colour parade involving more than 1,000 soldiers in the traditional display of pomp and pageantry.