Whitetiger said:
again it's a confusing mess...
No- Catherine will always have to curtesy to Sophie if they are without husbands since Sophie is the monoarch daughterin law and not granddaughter in law- if Edward is present and William then Edward out ranks William as son of the monoarch, but if William is there but not Edward then Sophie would curtesy to Catherine. Catherine curtesys to Edward not bc he was born royal and she wasn't but because Edward is the monoarchs son and William (from whom Catherine takes her rank) is only the grandson .....
In official precedence Anne ( a Princess of the Blood) must curtesy to Charles, Edward and Andrew as she is the monoarchs daughter and they are sons - so royal born or not has nothing to do with it in official setting, in private precedence it has a lot more to do with it
It's not based on succession (ie line to the throne) it's based on relationship to the monoarch( ie son, daughter, niece etc...) When Charles is King then yes if men in the room every curtesys to Catherine (now private precedence is different and based upon the monoarchs wishes)
For just the ladies, Anne outranks everyone (except the Queen) with Princess Alexandria, following as Princesses of the Blood, then Camilla, then Sophie and then Bea, Eugenie and Zara as granddaughters of the monoarch, probably then Kate (though the new one hasn't been publicized yet- it may change we will have to wait and see, I think off got this right but it's something like this) as I said before private precedence is at the discretion of the Queen ......Again, succesion has nothing to do with it. (see below)
In 2005, the Queen changed the order of precedence for private occasions, putting the Duchess of Cornwall fourth in the order of precedence, after herself, the Princess Royal, and Princess Alexandra, contrary to the usual position of the heir's consort. Charles' first wife, Diana, had ranked above the Princess Royal and Princess Alexandra.[1] The Duchess of Cornwall continues to rank second in the order of precedence at official occasions, such as state dinners.