Thanks for your answer.
Am not surprised they were written down.
Guess you are correct that N used the Louis versions as a basis,
Wonder (along with the Russian self-crowning aspect) N might not have taken this or that from other courts.
Have never read the roman historique of Marco de Saint-Hilaire, though there may well be hints in his Mémoires d'un page de de la cour imperiale or even some real court source (even if from a poison pen). - R