Born in Stockholm, Alfred Nobel was the fourth son of Immanuel Nobel ( 1801 – 1872 ), an inventor and engineer, and Andriette Ahlsell Nobel ( 1805 – 1889 ).

* 1801 – Joseph Lanner, Austrian composer and conductor ( d. 1843 )

* 1783 – Grand Duchess Alexandra Pavlovna of Russia ( d. 1801 )

* 1801 – First Barbary War: The American schooner captures the Tripolitan polacca Tripoli in a single-ship action off the coast of modern-day Libya.

* 1801 – Guillaume Groen van Prinsterer, Dutch politician ( d. 1876 )

* Alexander I of Russia ( 1801 – 1825 ), Emperor of Russia

* 1801 – Napoleonic Wars: Battle of Copenhagen – The British capture the Danish fleet.

* 1801 – Antoine Augustin Cournot, French mathematician ( d. 1877 )

** April 1798 – November 1801 Jakob Emmanuel Feer ( b. 1754 – d. 1833 )

* 1713 – Nicola Sala, Italian composer and music theorist ( d. 1801 )

* 1801 – Noël François de Wailly, French lexicographer ( b. 1724 )

After the defeat of the French Campaign in the Battle of the Nile, in 1801, the British Museum acquired more Egyptian sculpture and in 1802 King George III presented the Rosetta Stone – key to the deciphering of hieroglyphs.

* Frédéric Bastiat ( 1801 – 1850 ), classical-liberal author and political economist

#* Zénaïde Laetitia Julie Bonaparte ( 1801 – 1854 )

#** Charles Lucien Jules Laurent Bonaparte ( 1803 – 1857 ), ornithologist and politician married Princess Zénaïde Bonaparte ( 1801 – 1854 )

#* Prince Achille Murat ( 1801 – 1847 ), married Catherine Willis Gray ( 1803 – 1867 ), great-grandniece of George Washington.

Brigham Young (; June 1, 1801 – August 29, 1877 ) was an American leader in the Latter Day Saint movement and a settler of the Western United States.

* 2 Kings of Etruria ( 1801 – 1807 )

** Louis ( 1801 – 1803 )

The first four censuses ( 1801 – 1831 ) were mainly headcounts and contained little personal information.

He then studied medicine in Berlin and Würzburg, particularly with Albert von Kölliker, Franz Leydig, Rudolf Virchow ( with whom he later worked briefly as assistant ), and with anatomist-physiologist Johannes Peter Müller ( 1801 – 1858 ).

* Albert Lortzing ( 1801 – 1851 ), composer

Gustav Albert Lortzing ( October 23, 1801 – January 21, 1851 ) was a German composer, actor and singer.

Nine healthy children would follow in quick succession, though two died in childhood: Crown Prince Frederick William ( 1795 ), Prince William ( 1797 ), Princess Charlotte ( 1798 ), Princess Frederica ( 1799 ), Prince Charles ( 1801 ), Princess Alexandrine ( 1803 ), Prince Ferdinand ( 1804 ), Princess Louise ( 1808 ), and Prince Albert ( 1809 ).

* January 21-Albert Lortzing, composer ( b. 1801 )

He entered the Kriegsakademie ( also cited as " The German War School ," the " Military Academy in Berlin ," and the " Prussian Military Academy ") in Berlin in 1801 ( age 21 ), studied the writings of the philosopher Immanuel Kant, and won the regard of General Gerhard von Scharnhorst, the future first chief of staff of the new Prussian Army ( appointed 1809 ).

* 1801 – Christian Dietrich Grabbe, German writer ( d. 1836 )

In 1801, the German physicist Johann Wilhelm Ritter made the discovery of ultraviolet by noting that the rays from a prism darkened silver chloride preparations more quickly than violet light.

* 1801 – Julius Plücker, German mathematician and physicist ( d. 1868 )

As British public opinion was turned against Germany, Admiral Sir John Fisher twice – in 1904 and 1908 – proposed using Britain ’ s current naval superiority to ' Copenhagen ' the German fleet, that is, to launch preemptive strikes against the Kiel and Wilhelmshaven naval bases as the Royal Navy had done against the Danish navy in 1801 and 1807.

* 1772 – Novalis, German writer ( d. 1801 )

* 1745 – Carl Stamitz, German composer ( d. 1801 )

* 1868 – Julius Plücker, German mathematician and physicist ( b. 1801 )

* 1801 – Ludwig Bechstein, German poet ( d. 1860 )

* 1801 – Karl Baedeker, German author and publisher ( d. 1859 )

Part of this research benefited from the knowledge already expounded on in a book ( printed in German in 1794, in Czech in 1801 ), written by František Ondřej Poupě ( Ger: Franz Andreas Paupie ) ( 1753 – 1805 ) from Brno.

In 1801, the German physicist Johann Wilhelm Ritter made the discovery of ultraviolet by noting that the rays from a prism darkened silver chloride preparations more quickly than violet light.

In 1801, the German physicist Johann Wilhelm Ritter made the hallmark observation that invisible rays just beyond the violet end of the visible spectrum darkened silver chloride-soaked paper more quickly than violet light itself.

* October 4 – Karl Baedeker, German author and publisher ( b. 1801 )

* March 10 – Moritz von Jacobi, German engineer and physicist ( b. 1801 )

* September 12 – Christian Dietrich Grabbe, German playwright ( b. 1801 )

* May 2 – Novalis, German poet ( d. 1801 )

* December 15 – Johann Gottfried Koehler, German astronomer ( d. 1801 )

Ignacy Krasicki ( 3 February 173514 March 1801 ), from 1766 Prince-Bishop of Warmia ( in German, Ermland ) and from 1795 Archbishop of Gniezno ( thus, Primate of Poland ), was Poland's leading Enlightenment poet (" the Prince of Poets "), a critic of the clergy, Poland's La Fontaine, author of the first Polish novel, playwright, journalist, encyclopedist, and translator from French and Greek.

Julius Plücker ( 16 June 1801 – 22 May 1868 ) was a German mathematician and physicist.

Friedrich Clemens Gerke (* 22 January 1801 Osnabrück was a German writer, journalist, musician and pioneer of telegraphy who revised the Morse code in 1848.

* Johann Christian Gottlieb Ackermann ( 1756 – 1801 ), German doctor

Q. prinoides was named and described by the German botanist Karl ( Carl ) Ludwig Willdenow in 1801, in a German journal article by Muhlenberg.