Congress at Sistova, where, in May, 1791, he signed the Treaty of Peace
between the Grand Seignior and the Emperor of Germany. In June, 1792, he
was a second time sent as a Minister to Warsaw, where he remained until
January, 1793, when he was promoted to the post of Ambassador at the
Court of Vienna. He continued, however, to reside with His Prussian
Majesty during the greatest part of the campaign on the Rhine, and
signed, on the 24th of June, 1793, in the camp before Mentz, an offensive
and defensive alliance with your Court; an alliance which Prussian policy
respected not above eighteen months. In October, 1796, he requested his
recall, but this his Sovereign refused, with the most gracious
expressions; and he could not obtain it until March, 1797. Some
disapprobation of the new political plan introduced by Count von Haugwitz
in the Cabinet at Berlin is supposed to have occasioned his determination
to retire from public employment. As he, however, continued to reside in
the capital of Prussia, and, as many believed, secretly intrigued to
appear again upon the scene, the nomination, in 1800, to his present
important post was as much the consequence of his own desire as of the
favour of his King.

The Marquis of Lucchesini lives here in great style at the beautiful
Hotel de l'Infantado, where his lady's routs, assemblies, and circles are
the resort of our most fashionable gentry. Madame da Lucchesini is more
agreeable than handsome, more fit to shine at Berlin than at Paris; for
though her manners are elegant, they want that ease, that finish which a
German or Italian education cannot teach, nor a German or Italian society
confer. To judge from the number of her admirers, she seems to know that
she is married to a philosopher. Her husband was born at Lucca, in
Italy, and is, therefore, at present a subject of Bonaparte's
brother-in-law, Prince Bacciochi, to whom, when His Serene Highness was a
marker at a billiard-table, I have had the honour of giving many a