In his first televised Christmas message, the King said:
I am reminded of the deeply touching letters, cards and messages which so many of you have sent my wife and myself and I cannot thank you enough for the love and sympathy you have shown our whole family.
Myself, like himself, herself, itself, themselves, yourself, ourselves, etc is a reflexive pronoun, which is only used as a direct or indirect object where the corresponding indicated person is the subject of the sentence, such as:
I did the work myself...
The judge was talking to himself...
The shopkeeper bought it for herself...
The robbers divided the money among themselves...
etc.
But, when the subject refers to a different person to the object, then the reflexive form ...self, should not be used.
This may not be the first time members of the Royal family have used the reflexive pronoun in this way, and may explain why it was that Her Late Majesty the Queen was sometimes known as "Herself" - or was that just the ironical "Herself" referred to by @Kate Bunting in a comment on this page, and described by her as an "Irishism"?
So should this Royal form be given a name, akin to "the Royal we"?