* 1723 – Mathurin Jacques Brisson, French naturalist ( d. 1806 )

* 1806 – Francis II, the last Holy Roman Emperor, abdicates ending the Holy Roman Empire.

* 1806 – Battle of Mišar during the Serbian Revolution begins.

* 1806 – Santiago de Liniers, 1st Count of Buenos Aires re-takes the city of Buenos Aires, Argentina after the first British invasion.

* 1724 – George Stubbs, English painter ( d. 1806 )

* Anton Alexander Graf von Auersperg ( 1806 – 1876 ) – Austrian poet who wrote under the pseudonym of Anastasius Grün.

The Lewis and Clark Expedition spent the winter of 1805 – 1806 at Fort Clatsop, a small log structure south and west of modern day Astoria.

* 1806 – Michael Haydn, Austrian composer ( b. 1737 )

* 1727 – Michel Adanson, French botanist ( d. 1806 )

* William Bernard Ullathorne ( 1806 – 89 )

Following his conquest of most of Western Europe, the first Napoleon made his elder brother Joseph ( 1768 – 1844 ) king first of Naples ( 1806 – 1808 ) and then of Spain ( 1808 – 1813 ), his third brother Louis ( 1778 – 1846 ) king of Holland ( 1806 – 1810 ) ( subsequently forcing his abdication after his failure to subordinate Dutch interests to those of France ) and his youngest brother Jérôme Bonaparte ( 1784 – 1860 ) king of Westphalia, the short-lived realm created from some of the states of northwestern Germany ( 1807 – 1813 ).

At the Battle of Jena-Auerstedt on October 14, 1806 – when Napoleon invaded Prussia and defeated the massed Prussian-Saxon army commanded by Karl Wilhelm Ferdinand, Duke of Brunswick – he was captured, one of the 25, 000 prisoners captured that day as the Prussian army disintegrated.

He wished to maintain his and his family's Imperial status in the event that the Holy Roman Empire should be dissolved, as it indeed was in 1806 when an Austrian-led army suffered a humiliating defeat at the Battle of Austerlitz.

* 1806 – Battle of San Domingo: British naval victory against the French in the Caribbean.

Francis II () ( 12 February 1768 – 2 March 1835 ) was the last Holy Roman Emperor, ruling from 1792 until 6 August 1806, when he dissolved the Holy Roman Empire after the disastrous defeat of the Third Coalition by Napoleon at the Battle of Austerlitz.

Napoleon easily crushed it at the Battle of Jena ( 1806 ).

* 1806 – Battle of Jena-Auerstädt France defeats Prussia.

Initially known appropriately as the Achteck ( Octagon ), on 15 September 1814 it was renamed Leipziger Platz after the site of Prussia's final decisive defeat of Napoleon Bonaparte at the Battle of Leipzig, 16 – 19 October 1813, which brought to an end the Wars of Liberation that had been going on since 1806.

In 1806, a Fourth Coalition was set up, on 14 October Napoleon defeated the Prussians at the Battle of Jena-Auerstedt, marched through Germany and defeated the Russians on 14 June 1807 at Friedland.

Two of his most successful paintings, Bonaparte Visiting the Plague Victims of Jaffa ( 1804 ) and Battle of Abukir ( 1806 ) focus on the Emperor, as he was by then, but include many Egyptian figures, as does the less effective Napoleon at the Battle of the Pyramids ( 1810 ).

During the Napoleonic Wars, a British military expedition landed in the Cape Colony and defeated the defending Dutch forces at the Battle of Blaauwberg ( 1806 ).

After defeating Prussian forces at Battle of Jena-Auerstedt | Jena, the French Army entered Berlin on 27 October 1806

During the Russo-Turkish War of 1806 – 1812, Admiral Senyavin won the naval Battle of Lemnos off the coast.

**** Charles William Ferdinand, Duke of Brunswick ( 1735 – 1806 ), Charles ' I son, killed at the Battle of Jena-Auerstedt

The county is named for Robert McAlpin Williamson ( 1806 ?– 1859 ), a community leader and veteran of the Battle of San Jacinto.

After defeating Prussian forces at Battle of Jena-Auerstedt | Jena, the French Army entered Berlin on 27 October 1806

It was in nearby Lübeck-Ratekau that Blücher, who was actually born in Rostock and who was one of few generals to fight on after the Battle of Jena, surrendered to the French in 1806.

Following the Battle of Austerlitz in December 1805, The Holy Roman Empire was dissolved on 6 August 1806 when the last Holy Roman Emperor Francis II abdicated, following a crushing defeat at the Battle of Austerlitz by the French under Napoleon resulting in the Treaty of Pressburg, and sixteen of France's allies among the German states ( including Bavaria and Württemberg ) established the Confederation of the Rhine in July 1806.

Following the Battle of Jena-Auerstedt of October 1806 in the War of the Fourth Coalition, various other German states, including Saxony and Westphalia, also joined the Confederation.

After the 1806 Prussian defeat at the Battle of Jena-Auerstedt, Napoleon was the first to use the Brandenburg Gate for a triumphal procession and took its Quadriga to Paris.

In 1806 he produced The Death of Nelson, to commemorate Horatio Nelson's death at the Battle of Trafalgar.

Bransfield was rated as an able seaman in 1805 and was appointed to the 1st rate ship of the line ( 110 guns ) Royal Sovereign ( which had taken part in the battle of Trafalgar in 1805 ) in 1806 as an able seaman, then 2nd master's mate in 1808, midshipman in 1808, clerk in 1809 and midshipman again in 1811.

* Trafalgar Township ( area ), opened in 1806, the year of the Battle of Trafalgar.

Retiring in 1799, he died in 1806, having had the sad misfortune of witnessing the final eclipse of his proud navy at the Battle of Trafalgar, a few month before his death.

Edo period advertising flyer from 1806 for a traditional medicine called Kinseitan

In 1806, Thomas Bruce, 7th Earl of Elgin, ambassador to the Ottoman Empire from 1799 to 1803 removed the large collection of marble sculptures from the Parthenon, on the Acropolis in Athens and transferred them to the UK.

Clausewitz served in the Rhine Campaigns ( 1793 – 1794 ) including the Siege of Mainz, when the Prussian army invaded France during the French Revolution, and served in the Napoleonic Wars from 1806 to 1815.

Designed by Daniel Asher Alexander and constructed originally between 1806 and 1809 by local labour, to hold prisoners of the Napoleonic Wars, it was also used to hold American prisoners from the War of 1812.

Napoléon finally abolished the calendar with effect from 1 January 1806 ( the day after 10 Nivôse an XIV ), a little over twelve years after its introduction.

The lectures include two works from 1806.

Von Platen himself extolled the modernising virtues of the canal in 1806, claiming that mining, agriculture and other industries would benefit from " a navigation way through the country.

The Confederation of the Rhine, a confederation of client states of the First French Empire, existed from 1806 to 1813.

The Holy Roman Empire (,, ) was a varying complex of lands that existed from 962 to 1806 in Central Europe.

The Holy Roman Empire from 962 to 1806

Portrait by Friedrich Engels. Johann Kaspar Schmidt ( October 25, 1806 – June 26, 1856 ), better known as Max Stirner ( the nom de plume he adopted from a schoolyard nickname he had acquired as a child because of his high brow, in German ' Stirn '), was a German philosopher, who ranks as one of the literary fathers of nihilism, existentialism, post-modernism and anarchism, especially of individualist anarchism.

John Graves Simcoe ( February 25, 1752 – October 26, 1806 ) was a British army officer and the first Lieutenant Governor of Upper Canada from 1791 – 1796.

* 1806 – Pike expedition: United States Army Lieutenant Zebulon Pike begins an expedition from Fort Bellefontaine near St. Louis, Missouri, to explore the west.

Brahms's father, Johann Jakob Brahms ( 1806 – 72 ), came to Hamburg from Dithmarschen, seeking a career as a town musician.

He published lectures on the history of ancient sculpture in 1806, and painting in 1811, and edited the three volumes of an archaeological periodical called Amalthea from 1820 to 1825, which included contributions from the most eminent classical archaeologists of the day.

The origins of the collection were the 8, 600 works in the Royal Collection ( Cabinet du Roi ), which were increased via state appropriation, purchases such as the 1, 200 works from Fillipo Baldinucci's collection in 1806, and donations.

The official lyrics, based on a variant from 1806,

In 1818, Søren Abel had a public theological argument with Stener Johannes Stenersen regarding his catechism from 1806.

Austin explicates key definitions from both the Compendious ( 1806 ) and American ( 1828 ) dictionaries and brings into its discourse a range of concerns including the politics of American English, the question of national identity and culture in the early moments of American independence, and the poetics of citation and of definition.

During the period of Sultan Said ibn Sultan Al Said's rule ( 1806 – 1856 ), Oman cultivated its East African colonies, profiting from the slave trade.