Can style adressing be used in the first person, as in "I, My Majesty, King Charles, by the Grace of God..." instead of:
I, Charles the Third, by the Grace of God of the United Kingdom of Great Britain and Northern Ireland and of My other Realms and Territories, King, Defender of the Faith
(Source)
P.S. I don't wanna debate wether it sounds arrogant or not, all I wanna know is if it's grammatically correct.