Tempier’s letter and Jeancard’s persuasion eventually did the trick and Eugene succumbed to the pressure and wrote the required letter to the King.
My dear Tempier.
This letter will be brought you by Jeancard who will tell you orally everything we discussed together. Even so I’m giving him a letter for you, though it isn’t my intention to scold you for the bad humour you were unable to hide in the last two items of our correspondence. I understand that you could be upset at finding me resistant to certain plans you have set your heart on; however, the motives I adduced were sufficiently well-founded in reason and especially in religion to turn aside any annoyance at my resistance.
I see in the letter I got today that your anger hasn’t cooled down yet… However, you must have received my letter, sent on the 27th from Gap, in which I wrote out for you what I was proposing to write to the King. It has been dispatched and in all probability will be in his hands the day after tomorrow; I hope he will find it satisfactory and the first stage of our business will soon reach a satisfactory conclusion.
Eugene underlines the important point:
Jeancard will tell you in what sense I agree to the matter of being coadjutor and do not want a diocese. It is that if I have misfortune to lose my uncle, no-one would force me to accept the succession.
Letter to Henri Tempier, 31 August 1835, EO VIII n 539