PRINCE William and his bride Kate Middleton have been given the titles of Duke and Duchess of Cambridge to mark their wedding. Giving new titles to members of the Royal Family on their wedding day is a long-standing tradition and Buckingham Palace made the official announcement this morning. Following the wedding ceremony at Westminster Abbey today, the newlywed Prince will also take the titles Earl of Strathearn and Baron Carrickfergus. His bride will become her Royal Highness the Duchess of Cambridge, the Countess Strathearn and Baroness Carrickfergus. The titles link the couple to England, Scotland and Northern Ireland. The title of duke is the highest in the British peerage.