a princess by marriage and will be addressed in the same way. An example of this situation was the late Princess Alexandra, Duchess of Fife, when she married her cousin Prince Arthur of Connaught and became "Princess Arthur of Connaught, Duchess of Fife". Typically a princess by marriage should not be called princess followed by her first name. Diana, Princess of Wales, was consistently referred to as "Princess Diana" by fans and the media, but the use of this title is completely erroneous, as she was not the child of a monarch nor the child of a son of a monarch. However, this tradition was broken once in the past century with Elizabeth II's aunt, Princess Alice, Duchess of Gloucester, being referred to—with permission from the sovereign—in official sources as such following the death of her husband. History The use of the titles prince and princess and the styles of Highness and Royal Highness for members of the Royal Family is of fairly recent usage in the British Isles. Before 1714, there was no settled practice regarding the use of the titles prince and princess other than the heir apparent and his wife. From 1301 onward, the eldest sons of the Kings of England (and later Great Britain and the United Kingdom) have generally been created Prince of Wales and Earl of Chester. Their wives were titled Princess of Wales. The title Princess Royal came into being in 1642 when Queen Henrietta Maria, the French-born wife of King Charles I, wished to imitate the way the eldest daughter of the French King was styled (Madame Royale). However, there was no settled practice on the use of the title princess for the Sovereign's younger daughters or male-line granddaughters. For example, as late as the time of King Charles II, the daughters of his brother James, Duke of York, both of whom became Queens regnant, were called simply "The Lady Mary" and "The Lady Anne". The future Queen Anne was styled princess in her marriage treaty to Prince George of Denmark and then styled "Princess Anne of Denmark" once married. However, in exile at Saint-Germain-en-Laye the deposed James II & VII gave the title of Princess Royal to his last daughter, Louisa Maria (1692–1712). After the accession of George Louis of Hanover as King George I, the princely titles were changed to follow the German practice. The children, grandchildren, and male line