The battle proved decisive; on 20 May 1815, Austria and Naples concluded the Treaty of Casalanza, restoring Ferdinand IV to the throne.
After the Restoration (1815) Giuseppe Rosaroll received from king Ferdinand of Bourbon (Ferdinand I of the Two Sicilies) the command of a brigade and then of the division of Messina.
Thus exposed, Naples fell to the advancing troops of Masséna but Gaeta still held out for King Ferdinand and Masséna's main force became locked up in the siege of this fortress.
After the death of Alfonso he continued to serve in the capilla under his son Fernando I of Naples.
Ferdinand Marcos | Ferdinand Magellan | Franz Ferdinand | Ferdinand II of Aragon | Franz Ferdinand (band) | Archduke Franz Ferdinand of Austria | Ferdinand von Mueller | Ferdinand I, Holy Roman Emperor | Ferdinand I | Ferdinand | Louis-Ferdinand Céline | Ferdinand Foch | Rio Ferdinand | Kingdom of the Two Sicilies | Ferdinand VII of Spain | Ferdinand de Lesseps | Ferdinand Porsche | Ferdinand II, Holy Roman Emperor | Ferdinand II | Ferdinand Hodler | Ferdinand I of Naples | Ferdinand III | Maria Christina of the Two Sicilies | Ferdinand Vandeveer Hayden | Ferdinand I of the Two Sicilies | Ferdinand I of Bulgaria | Ferdinand I of Aragon | Ferdinand III of Castile | Ferdinand III, Holy Roman Emperor | Ferdinand Finne |
In 1799 he was created Duke of Bronté (Duca di Bronté), of the Kingdom of the Two Sicilies by King Ferdinand I, which title he was given royal sanction to use in Britain.
He was regent of the Kingdom of Sicily from July the 8th 1808 until August the 1st 1808 when Ferdinand I of the Two Sicilies handed over the crown of the Kingdom to Joseph Bonaparte and to Murat.