Draft letter of thanks to the Pope, who granted his blessing to the marriage of the Dauphin of France and the Infanta of Spain: “Most Holy Father, I recognized in the eager kindness with which your Holiness was kind enough to grant the dispensations for my marriage with the Infanta of Spain the sentiments that I have always desired to find in Your Beatitude the approval which she gave to this alliance which was celebrated on the 18th [the marriage was celebrated on February 19 1745] of this month is at the same time a certain omen to me that God will spread the most precious blessings on its consequences, flattered by these circumstances so touching for me, my wishes will be fulfilled if Your Beatitude accepts the profession that I make today of my filial respect for her and my devotion to the Holy See, being Most Holy Father your very humble and very " The need to reconcile the two Bourbon branches, French and Spanish, forced King Louis Bourbon, Infanta of Spain who will be the future dauphine of France. The marriage was celebrated in the Chapel of Versailles on February 19, 1745. The dauphin never acceded to the throne; he died before his father, on December 20, 1765, of a lung disease. However, he is the father of the last three kings of France: Louis XVI, Louis XVIII and Charles X.