Paul I of Russia
Paul I (; "Pavel Petrovich") ( – ) reigned as Emperor of Russia between 1796 and 1801. Officially, he was the only son of Peter III and Catherine the Great, though Catherine hinted that he was fathered by her lover Sergei Saltykov, who also had Romanov blood, being a descendant of the first Romanov tsar's sister, Tatiana Feodorovna Romanova.
Second League of Armed Neutrality
In addition to this, Prussia invaded Hanover in April 1801 as a way to attack the British. Paul's death in March 1801 and the accession of Alexander I led to a change of policy in Russia, and the alliance collapsed. Russia later joined the British in a coalition against Napoleonic France.