I and you and/or one or more other people
used in place of I by a sovereigns, and occasionally others, in making public pronouncements
We are no tyrant, but a Christian king — Shakespeare
We have become a grandmother — Margaret Thatcher
used in place of I by a writer ors and editors to preserve an impersonal character
used patronizingly in place of you, e.g. to children or the sick
[Old English wē]