Treaty of Florence The armistice of Foligno and the treaty of Florence in 1801 were two peace treaties signed between France and the Kingdom of Naples with the mediation of Russia , a part of the Napoleonic wars . Forced by the French military presence , Naples ceded some territories in the Tyrrhenian sea and accepted French garrisons to their ports on the Adriatic sea . All Neapolitan harbours were closed to British and Ottoman vessels . Napoleon was relatively lenient to the defenseless kingdom of Naples thanks to his need to appease Tsar Paul I of Russia and its allies of the League of Neutrals . The Tsar , who was assassinated less than a week before the signing of the treaty , was concerned with the French advance in Italy and had decided to support the King of Naples . The First Consul , wanting to attract the Tsar to his side in the strife in Europe , was forced to allow Ferdinand IV remaining on the throne , albeit now a vassal of Napoleonic France . Context . In the early nineteenth century France , with Napoleon in charge , was at war against the Second Coalition formed by the Holy Roman Empire , Great Britain , Portugal , the kingdom of Naples , Russia and the Ottoman Empire . Spain and France remained a military alliance since the signing of the Treaty of San Ildefonso in 1796 . After the victories of Napoleon ' s army in the campaign of 1800 in Marengo , Höchstädt and Hohenlinden , on February 9 , 1801 the Holy Roman Empire made peace with France by the Treaty of Lunéville . Naples , that until Marengo had help from the Holy Roman Empire , was at the mercy of the powerful French army . Ferdinand IV , King of Naples and ( III of ) Sicily , was the brother of Charles IV of Spain , but their relationship was no obstacle to oppose the Franco - Spanish alliance . The influence of his wife , Queen Maria Carolina of Austria , of the Austrian royal family , led to the alignment of Naples with the Second Coalition and the Holy Roman Empire . Maria Carolina was the sister of Marie Antoinette , queen consort of France . The crown prince of Naples , Francis , was married to the Archduchess of Austria Maria Clementina , daughter of Emperor Leopold II . Agreements . Armistice of Foligno . With the advance of the French army under General Murat , Count Roger de Damas , in command of the Neapolitan troops , sent Colonel Micheroux to negotiate an armistice for one month . With this preliminary armistice , the final armistice was signed in Foligno on 9 February a few days later . Treaty of Florence . The final treaty was signed on March 28 in Florence with the mediation of the Russian general Lewaschef sent by the Tsar Paul I at the request of Maria Carolina . The main points of the agreement were : Effect and aftermath . The principality of Piombino and the State of Presidi would be ceded to the Grand Duchy of Tuscany and transferred to the Spanish infante Louis Francis of Bourbon - Parma , in exchange for the Spanish colony of Louisiana , as agreed in the Treaty of San Ildefonso of 1800 . In May 1801 the French general Soult with 10 , 000 troops occupied the ports of Otranto , Taranto ( temporarily ) and Brindisi , to facilitate communications with the French army in Egypt . Following the signing of peace between France and Russia in October 1801 , French troops temporarily evacuate the Neapolitan territory , again to occupy the country in 1803 against the threat from the British fleet . With the treaty of Florence , together with the treaties of Lunéville and Badajoz and the Concordat with the pope and culminating in 1802 with the signing of the Peace of Amiens , there was peace in Europe until 1805 , when hostilities would resume in the French war against the Third Coalition .