The daughters of a duke,
The daughter of a Duke is styled with the honorary title of Lady + first name + family surname (which is usually different from her father's dukedom name) or married surname. She is addressed as 'Lady (first name)' or 'my lady' or 'your Ladyship. '
The 2nd and subsequent children of a Duke would get the courtesy title of “Lord/Lady <name>”. Since the title of Lord/Lady doesn't have the ability to have their children have any courtesy titles, the children of these 2nd children would just be known as “Mr./Miss”.
By tradition, only those born into the royal family can use “prince” or “princess” before their name and, other than the Prince of Wales—presumably to show his primacy—they are officially known by other titles: Prince William was also known as the Duke of Cambridge, for example.
The daughters and paternal granddaughters of Russian emperors, as well as the consorts of Russian grand dukes, were generally called "grand duchesses" in English.
A duke's eldest son and heir is often a marquess, though he can also be an earl, viscount, or baron. The title given to the heir is a lesser title of the peer, usually the next highest peerage he holds.
After the duke's son died, the patent for the dukedom was amended by parliament to allow his daughters and their sons to inherit the dukedom successively.
The daughters of a duke, marquess or earl have the courtesy title of "Lady" before their forename and surname.
While both duchesses and princesses are royalty, and princesses technically outrank duchesses, the relationship between the two titles is not always clearly defined. Princesses are usually the daughters or granddaughters of a king or queen.
If the daughter of a duke marries a peer, she takes his title. If she marries the eldest son of a peer, she takes his title, but in the case of the heir of an earl or lesser peer, she may choose to keep her own title until her husband inherits.
In modern Britain, an earl is a member of the peerage, ranking below a marquess and above a viscount. A feminine form of earl never developed; instead, countess is used.
Can a prince also be a duke? Yes. In some cases, a member of the monarchy can acquire multiple titles, including prince and duke. For example, Prince Harry of the British royal family is also the Duke of Sussex (even after stepping back from his role in the royal family).
As a general rule, royals outrank nobles. But a royal Duke, such as the Duke of Cambridge (aka Prince William), outranks his female relatives who are princesses because in the line of succession, he comes before them.
The five possible titles, ranked from highest to lowest, are: duke, marquess, earl, viscount, and baron for men; duchess, marchioness, countess, viscountess, and baroness for women. In addition to being bestowed, the titles could also be inherited, but only by male heirs.
For male members of the Royal Family the same rules apply, with the title used in the first instance being 'Your Royal Highness' and subsequently 'Sir'. For other female members of the Royal Family the first address is conventionally 'Your Royal Highness' and subsequently 'Ma'am'.
Kate is technically a princess of the United Kingdom, but “princess” is her occupation, not her title. Her titles under the Queen's rule were, however… The Duchess of Cambridge: A hereditary title bestowed by Queen Elizabeth II on Kate when she married Prince William.
Princess Diana held the Princess of Wales title since marrying Prince Charles in 1981. When he married Camilla Parker Bowles in 2005, she took on the title the Duchess of Cornwall and was not given the Princess of Wales title out of respect for Diana.
Diana, Princess of Wales, formerly Lady Diana Frances Spencer, was born on 1 July 1961 at Park House near Sandringham, Norfolk. She was the youngest daughter of the then Viscount and Viscountess Althorp, now the late (8th) Earl Spencer and the late Hon.
Children of peers can outrank certain actual peers. For instance, the daughter of a duke outranks a countess. However, if the daughter of a duke marries an earl, she drops to the rank of countess, because her courtesy title is subsumed in his substantive title.
However, Princess Charlotte will only become a Duchess if she decides to marry a Duke. Therefore, she won't automatically receive the title as it is royal tradition that it is only given to male descendants. But the little royal may be given another title when William one day becomes King.
“If a duke only has a daughter, will she become a duchess after his death?” Not in the UK; all the extant British dukedoms pass exclusively in the male line according to their Letters Patent. That's why when Prince Andrew dies, York will go extinct and revert to the Crown rather than passing to Princess Beatrice.
This means that to become a duchess, one can marry someone in the royal family who either already is a duke or is being granted duke status as well (like Camilla Parker Bowles, Princess Catherine and Markle did). A princess can become a duchess on her wedding day if there's a title that's not already in use.
To inherit a dukedom, you would need: To be a direct male descendant of a previous holder of the title. For all those with a greater claim to the title (if any) to have already died.
Duke is a male title either of a monarch ruling over a duchy, or of a member of royalty, or nobility. As rulers, dukes are ranked below emperors, kings, grand princes, grand dukes, and sovereign princes. As royalty or nobility, they are ranked below princes and grand dukes.