The engagement of Sophie Rhys-Jones and The Prince Edward, the youngest son of The Queen and The Duke of Edinburgh, was announced on 6 January 1999. Their wedding took place on 19 June of the same year at St George's Chapel at Windsor Castle, a break from the weddings of Edward's older siblings, which were large, formal events at Westminster Abbey or St Paul's Cathedral. On the day of their marriage, The Queen declared her youngest son would eventually be created Duke of Edinburgh, once that title merges with the Crown, ie. after both The Queen and Prince Philip die and Charles as heir apparent to his father's titles as well as those of his mother becomes King – Sophie should then assume the title of Duchess of Edinburgh. Until then The Prince Edward will be Earl of Wessex and Viscount Severn, the latter title reflecting his bride's Welsh origins. Upon her marriage Rhys-Jones became Her Royal Highness The Countess of Wessex. After the union, the couple moved to Bagshot Park, in Surrey.
The children, per prior agreement between The Queen and their parents, will either not have or use (depending on interpretation) the titles of Prince and Princess, nor the style Royal Highness.