Prince of Wales Nations. The wife of the Prince of Wales is entitled to the title Princess of Wales. Prince Charles's first wife, Diana, used that title but his second wife, Camilla, uses only the title Duchess of Cornwall (or of Rothesay when in Scotland) because the other title has become so popularly associated with Diana. The Prince of Wales is the heir apparent of the monarch of the United Kingdom. No formal public role or responsibility has been legislated by Parliament or otherwise delegated to him by law or custom, either as heir apparent or as Prince of Wales. The current Prince
Frederick, Prince of Wales The marriage negotiations foundered when Frederick William demanded that Frederick be made Regent in Hanover. Frederick also almost married Lady Diana Spencer, daughter of Charles Spencer, 3rd Earl of Sunderland and Lady Anne Churchill. Lady Diana was the favourite grandchild of the powerful Sarah, Duchess of Marlborough. The duchess sought a royal alliance by marrying Lady Diana to the Prince of Wales with a massive dowry of £100,000. The prince, who was in great debt, agreed to the proposal, but the plan was vetoed by Robert Walpole and the king. Lady Diana soon married John Russell, 4th Duke of Bedford.