In the mid-19th century important leaders included Transcendentalists such as Ralph Waldo Emerson ( 1803 – 1882 ) and Henry David Thoreau ( 1817 – 1862 ).

After the French removed the surviving 7, 000 troops in late 1803, the leaders of the revolution declared the new nation of independent Haiti in early 1804.

The majority of the Irish leaders in the rebellions of 1798, 1803, 1848, 1867 and 1916 were imprisoned there.

In 1803, Robert Emmet, the brother of one of the United Irish leaders launched another one-day rebellion in the city, however, it was put down easily and Emmet himself was hanged, drawn and quartered.

Also in 1803, Jefferson engaged Ellicott as a mentor and teacher for Meriwether Lewis, one of the leaders of the Lewis and Clark Expedition that was to start the following year.

Badr Khan Beg ( 1803, Cizre-1868 ) was the last emir and mutesellim of Cizre Bohtan Emirate.

In May, 1803, Ritter, in another flight of fancy, wrote to Oersted a letter that contained a remarkable prophecy.

In an 1803 letter to William Henry Harrison, Jefferson wrote:

On March 9, 1803, Henry Dearborn, the Secretary of War wrote to Colonel Jean Hamtramck, the commandant of Detroit, instructing him to have an officer and six men survey the route from Detroit to Chicago, and to make a preliminary investigation of the situation at Chicago.

Writer Howard, an agent selling a distressed cargo of slaves from a shipwreck in Tortola in 1803 wrote that " Tortola is well nigh the most miserable, worst-inhabited spot in all the British possessions ... this unhealthy part of the globe appears overstocked with each description of people except honest ones.

That this was insufficient incentive is revealed in a report on proposed changes to the RN Admiral Nelson wrote in 1803 ; he noted that since 1793 more than 42, 000 sailors had deserted.

Upon his return, Krusenstern wrote a detailed report, Reise um die Welt in den Jahren 1803, 1804, 1805 und 1806 auf Befehl Seiner Kaiserliche Majestät Alexanders des Ersten auf den Schiffen Nadeschda und Newa ( Journey around the World in the Years 1803, 1804, 1805, and 1806 at the Command of his Imperial Majesty Alexander I in the Ships Nadezhda and Neva ) published in Saint Petersburg in 1810.

Robert Emmet wrote a letter from his cell in Kilmainham Jail, Dublin on 8 September 1803.

In 1803, Johann Wolfgang von Goethe wrote a poem based on the story that was later set to music by Hugo Wolf.

Joseph Priestley, after he had fled to America and not long before his death, wrote a letter that was read to the American Philosophical Society in 1803.

In his 1803 publication " Yarrow Unvisited " William Wordsworth wrote:

VI, Part IV, of the Medical Repository, 1803, pp. 449 – 50, Dr. Samuel Mitchill, wrote the following under the heading of " Medical and Philosophical News ":

George Henry Borrow ( 5 July 1803 – 26 July 1881 ) was an English author who wrote novels and travelogues based on his own experiences traveling around Europe.

The first steel pen is said to have been made in 1803 ( but in Daniel Defoe's book " A Tour Through the Whole Island of Great Britain-1724-26 " Letter VII he wrote: ' the plaster of the ceilings and walls in some rooms is so fine, so firm, so entire, that they break it off in large flakes, and it will bear writing on it with a pencil or steel pen ).

Beethoven wrote most of the symphony in late 1803 and completed it in early 1804.

Between 1803 and 1844 Spohr wrote more violin concertos than any other composer of the time, eighteen in all, including works left unpublished at his death.

Besides his Musical Tour through England ( 1788 ), his Professional Life, an autobiography published in 1803, a History of the Stage ( 1795 ), and several smaller works, he wrote upwards of 1400 songs and about thirty dramatic pieces.

Federalist William Plumer of New Hampshire wrote in 1803 of his striking presence:

Peale wrote several books, among which were An Essay on Building Wooden Bridges ( 1797 ) and An Epistle to a Friend on the Means of Preserving Health ( 1803 ).

Ten years later he wrote Reflections on the Invasion of Great Britain by the French Armies ; on the Mode of Defence ; and on the useful application of the National Levies ( 1803 ).

During these wanderings he wrote Le peintre de Salzbourg, journal des émotions d ' un coeur souffrant, suivi des Meditations du cloître ( 1803 ).

In a letter ( 14 March 1803 ) to Samuel Taylor Coleridge, Robert Southey wrote that “ Ritson is the oddest, but most honest of all our antiquarians, and he abuses Percy and Pinkerton with less mercy than justice .”

When the region was obtained by the United States as part of the Louisiana Purchase in 1803, President Jefferson wrote of the " immense and trackless deserts " of the region.

It is named after the Boulevard Edgar Quinet, named after Edgar Quinet ( 1803 – 1875 ), a historian and intellectual who wrote on German history, Christianity and other subjects.

According to his letter from Fredericktown, Ohio on April 15, 1803, Lewis purchased the soup from Francois Baillet, a cook in Philadelphia.

In a famous letter to Meriwether Lewis in 1803, Thomas Jefferson instructed the Lewis and Clark expedition to " carry with you some matter of the kine-pox ; inform those of them with whom you may be, of its efficacy as a preservative from the smallpox ; & encourage them in the use of it ..." Jefferson had developed an interest in protecting Native Americans from smallpox having been aware of epidemics along the Missouri River during the previous century.

On 27 January 1858 Bizet arrived at the Villa Medici, a 16th-century palace that since 1803 had housed the French Académie in Rome and which he described in a letter home as " paradise ".

In an 1803 letter to Vice President Aaron Burr, he characterized the plans and work done as " faulty construction ".

Though anonymous, Lalanne, who published them ( Les Derniers Jours du Consulat, 1886 ), proved them to be in the same handwriting as a letter of Fauriel's in 1803.

Other explorers who stopped at the island included members of the French expedition of Nicholas Baudin in the Naturaliste and the Geographe in 1801 ( when he planted a flag and left a bottle with a letter ) and 1803, Phillip Parker King in 1822, and Captain James Stirling in 1827.

But in any case he set off in 1803, with a diplomatic letter from Governor King attesting his bona-fides and that his sole purpose if he were on the West coast of South America would be in procuring provisions.

A letter from Thomas Jefferson | President Thomas Jefferson to the United States Congress | U. S. Congress, dated January 18, 1803, asking for $ 2, 500 to equip an expedition that would explore the lands west to the Pacific.

Digraph considered since 1803 to be the fourteenth letter of the Spanish alphabet because of its representation of a palatal lateral articulation consonant phoneme.

In an 1803 letter to Joseph Priestley, Jefferson states that he conceived the idea of writing his view of the " Christian System " in a conversation with Dr. Benjamin Rush during 1798 – 99.

Returning to England at the outbreak of war in 1803, Jack is offered a letter of marque by a Mr. Canning.

The French dissolved the Electoral court of Bonn and disbanded its orchestra, but in the early months of 1803 the penniless Ries managed to reach Vienna, with a letter of introduction to Beethoven, who had received some early instruction at Bonn from Ries's father, Franz Anton.

A letter about Dasan's method of making caked tea has survived, dated 1830, that Dasan sent to Yi Si-Heon 李時憲 ( 1803 – 1860 ), the youngest pupil taught by him during his 18 years of exile in Gangjin: “ It is essential to steam the picked leaves three times and dry them three times, before grinding them very finely.

Short was solely responsible for the entries beginning with the letter A ( 216 pages ); Lewis was solely responsible for the entries beginning with the letters B through Z ( 1803 pages ).

In a letter written 18 August 1803, he protested against the Organic Articles added to the Concordat by the French Government.