1804 – At Notre Dame Cathedral in Paris, Napoleon Bonaparte crowns himself Emperor of the French, the first French Emperor in a thousand years.
1805 – Napoleonic Wars: Battle of Austerlitz – French troops under Napoleon Bonaparte defeat a joint Russo-Austrian force.
1851 – French President Louis-Napoléon Bonaparte overthrows the Second Republic.
1852 – Louis-Napoléon Bonaparte becomes Emperor of the French (Napoleon III).
(via my dad and wikipedia)