The 'Majesty' group
These nouns are used when formally addressing or referring to an important person. They are always preceded by a possessive determiner. (See also Section 11, meaning group 6.)
Eminence Excellency Grace Highness Holiness Honour Ladyship Lordship Majesty Royal Highness
Your Honour, I have something to say.
Their Majesties mounted the memorial monument to mingle with spectators.