What is prince Philip's correct title?
His Royal Highness Prince Philip, Duke of Edinburgh
She's their cousin. Prince Harry and Prince Will are the sons of Prince Charles, who is the brother of Princess Anne. Zara Philips is Princess Anne's only daughter. She was 13th in line to the throne, but with the birth of her brother Peter's new baby girl on Dec 29, 2010, she will move down in the succession.
Prince William has not lost his title as prince. The duke of york still retains his title as prince Andrew however it is common for the queen to give other titles to royal members when they marry. When William married Catherine she automatically receives the title princess William but they will be officially known as the duke and duchess of Cambridge. Also a duke is higher than a prince.
Prince William is now the Duke of Cambridge. He will not become the Prince of Wales until his father Prince Charles, the current Prince of Wales, becomes King. Even then, the title of Prince of Wales does not begin automatically. Prince William must have an investiture which bestows the title of Prince of Wales upon him. This answer was re-written by DieselEstate on 20th April 2012
Harry's wife will become a princess and will take the major title of her husband, depending on what that is at the time For example, when Kate married William, she became a princess, but took on the title of 'Duchess of Cambridge' because the title of 'Duke of Cambridge' out-ranks your bog standard prince title. When Charles and Diana married, Diana took the title of 'Princess of Wales' because Charles was the Prince of Wales…
At the time of her death on Elizabeth Bowes-Lyon(The Queen Mother) left one living child, Queen Elizabeth II, 7 Grandchildren, Prince Charles Prince of Wales, Princess Anne The Princess Royal, Prince Andrew Duke of York, Prince Edward Earl of Wessex, David Armstrong-Jones, Viscount Linley, and Lady Sarah Chatto, and 9 Great-Grandchildren Prince William of Wales, Prince Henry of Wales, Peter Philips, Zara Philips, Princess Beatrice of York, Princess Eugenie of York, Charles Armstrong-Jones, Samuel Chatto…