Memoirs of Louis XV/XVI, vol 5

Vermond said, The Queen is happily delivered, Her Majesty was nearly suffocated. I had hold of her hand, and as I said 'La regina e andato', mistaking 'andato' for 'nato', between the joy of giving birth to a son and the pressure of the crowd, Her Majesty fainted. Overcome by the dangerous situation in which I saw my royal mistress, I myself was carried out of the room in a lifeless state. The situation of Her Majesty was for some time very doubtful, till the people were dragged with violence from about her, that she might have air. On her recovering, the King was the first person who told her that she was the mother of a very fine Princess.

"'Well, then,' said the Queen, 'I am like my mother, for at my birth she also wished for a son instead of a daughter; and you have lost your wager:' for the King had betted with Maria Theresa that it would be a son.

"The King answered her by repeating the lines Metastasio had written on that occasion.

"'Io perdei: l'augusta figlia