Quote Originally Posted by Pleater View Post
I've corrected Catherine in the title.

It has been usual for the wife of a king to be titled Queen, but it would be usual for the wife of a Prince to be a princess, which in the case of Charles and Camilla has not been the case.
This was a decision taken jointly by HRH Prince Charles and (as she was then) Camilla Parker-Bowles and approved by Her Majesty prior to their wedding.

Quote Originally Posted by Pleater View Post
The mother of our present Queen was 'Queen Elizabeth the Queen Mother' - not counted as a queen...
Actually, until the death of her husband, HM King George VI, she was styled as Her Majesty Queen Elizabeth. On February 6, 1952, her daughter HRH Princess Elizabeth assumed the crown as Her Majesty Queen Elizabeth II. Because of the similarity of names, the former queen (now a dowager) took the title Her Majesty Queen Elizabeth the Queen Mother.

Quote Originally Posted by Pleater View Post
...but if Charles becomes King it will have to be decided then what title Camilla will use.
She will use the title Her Majesty Queen Camilla.

Quote Originally Posted by Pleater View Post
Possibly Dowager Duchess but Charles' marriage is setting a new precedent, so the title will have to be sorted out as and when necessary.
A "dowager" is the widow of a deceased titled nobleman, ie: the dowager Marchioness of Brighton; this is a rather archaic distinction and not often encountered in common modern usage. As far as sorting out HRH The Duchess of Cornwall's title when her husband becomes king, these things were well and truly sorted out before they were married in the unlikely event that Her Majesty should die either before or immediately after her son's marriage.

Quote Originally Posted by Pleater View Post
In the course of time Catherine should take the title Queen, but she would not become monarch as she is not in the line of succession.

Anne the Pleater :ootd:
Quite correct. Her step-son William would (presumably) ascend the throne as His Majesty King William V, and his wife would become Her Majesty Queen Catherine. Her Majesty Queen Camilla would retain both the style (HM) and title (queen) that she enjoyed during the lifetime of her husband, the late king.