I had an opportunity of being presented to Lucian, who bears the title of Prince of Canino, before I left Rome for Naples, as on leaving the Pays de Vaud I was charged by a Swiss gentleman to deliver a letter to him, the purport of which was to state that he had rendered services to Joseph Napoleon, when he was resident in that Canton, in consequence of which he had been persecuted and deprived of his employment at Lausanne, which was that of Captain of the Gendarmerie; and in the letter he sollicited pecuniary assistance from the Prince of Canino. I rode out one morning to the Villa of Ruffinella where the Prince resides and was very politely received; it appeared however that the Prince was totally unacquainted with the person who wrote the letter, nor was he at all aware of the circumstances therein mentioned. I told him that I was but little acquainted with the writer of the letter, but that he, on hearing of my intention of going to Rome, asked me to deliver it personally. The Prince told me he would write himself to the applicant on the subject. Here the negotiation ended; but on my taking leave the Prince said he should be happy to see me whenever I chose to call. The Prince has the character of being an excellent father and husband, and seems entirely and almost exclusively devoted to his family. He has a remarkably fine collection of pictures and statues in his house at Rome. I had an opportunity likewise of seeing the ex-King of Holland, Louis Napoleon, who seems to be a most excellent and amiable man, and in fact everybody agrees in speaking of him with eulogy. With regard to the present Pontiff Pius VII, from the excellence of his private character and virtues, and from his unassuming manners and goodness of heart, there is but one opinion respecting him. Even those who do not like the ecclesiastical Government, and behold in it the degradation of Italy, render justice to the good qualities of Pius VII. He always displayed the greatest moderation and humanity in prosperity, and in adversity he was firm and dignified. In his morals and habits he is quite a primitive Christian, and if he does not possess that great political talent which has distinguished some of his predecessors, he has been particularly fortunate and discriminating in the choice of his minister, in whom are united ability, firmness, suavity of manner and unimpeachable character. I think I have thus given a faithful delineation of Cardinal Consalvi. ROME, March 12th.