About the day » Tuesday May 21, 1861Calender converter

• Annegje Schaap, Weststellingwerf († 1862)
• Anna Elisabeth Steinmeijer, Groningen, Groningen, Nederland († 1949)
• Alphons Stephan Pieters, Klerken († 1910)
• Anna Catharina de Vries, Ommen
• Anna Maria Verduijn, Rijnsaterwoiude († 1940)
• Aaltje Soer, Havelte,Drenthe,Niederlande († 1945)
• Aaltje Soer, Uffelte-Havelte († 1945)
• Anna Maria Schols, Kortessem (B) († 1866)
• Adrana Lancee, Utrecht, Utrecht, Netherlands († 1866)
• Anna Maria van den Berg, Uden, Noord-Brabant, Nederland († 1890)

• Albert Gerrits Gruppen (2), Avereest
• Antonia van Geffen (0), Well, Gelderland, Nederland
• Aletta Catharina Engelbrecht (87), Hofmeyr, Stormberg District, Eastern Cape, South Africa
• Adriaantje Van NES (26), Ridderkerk
• Alida Versveld (50), Geervliet
• Albert Gruppen (5), Hoogeveen nederland
• Anna Francisca Maria Elisabeth Reijntjes (0), Nijmegen
• Anna Maria Hagenaars (65), Wouw, NL
• Adriaan Johannes van Schermbeek (53), Maastricht, Limburg, Nederland
• Anna VERHAGEN (0), Rotterdam

• 1844 » Henri Rousseau, French painter († 1910)
• 1850 » Giuseppe Mercalli, Italian priest and volcanologist († 1914)
• 1851 » Léon Bourgeois, French police officer and politician, 64th Prime Minister of France, Nobel Prize laureate († 1925)
• 1853 » Jacques Marie Eugène Godefroy Cavaignac, French politician († 1905)
• 1856 » José Batlle y Ordóñez, Uruguayan journalist and politician, President of Uruguay († 1929)
• 1860 » Willem Einthoven, Indonesian-Dutch physician, physiologist, and academic, Nobel Prize laureate († 1927)
• 1861 » Abel Ayerza, Argentinian physician and academic († 1918)
• 1863 » Archduke Eugen of Austria († 1954)
• 1864 » Princess Stéphanie of Belgium († 1945)
• 1873 » Hans Berger, German neurologist and academic († 1941)

• 1810 » Chevalier d'Eon, French diplomat and spy (b. 1728)
• 1844 » Giuseppe Baini, Italian priest and composer (b. 1775)
• 1858 » José de la Riva Agüero, Peruvian soldier and politician, 1st President of Peru and 2nd President of North Peru (b. 1783)
• 1862 » John Drew, Irish-American actor and manager (b. 1827)
• 1879 » Arturo Prat, Chilean lawyer and commander (b. 1848)
• 1894 » Émile Henry, French anarchist (b. 1872)
• 1894 » August Kundt, German physicist and academic (b. 1839)
• 1895 » Franz von Suppé, Austrian composer and conductor (b. 1819)
• 1901 » Joseph Olivier, French rugby player (b. 1874)
• 1911 » Williamina Fleming, Scottish-American astronomer and academic (b. 1857)

1. Jan
2. Johannes
3. Cornelis
4. Hendrik
5. Pieter
6. Willem
7. Gerrit
8. Jacob
9. Petrus
10. Jacobus
11. Dirk
12. Adrianus
13. Arie
14. Klaas
15. Hendrikus
16. Albert

1. Maria
2. Johanna
3. Anna
4. Cornelia
5. Elisabeth
6. Catharina
7. Adriana
8. Hendrika
9. Wilhelmina
10. Aaltje
11. Grietje
12. Trijntje
13. Neeltje
14. Antje
15. Elizabeth
16. Mary

• Koning Willem III (Huis van Oranje-Nassau) was from 1849 till 1890 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
• From March 14, 1861 till January 31, 1862 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Loudon with the prime ministers Mr. J.P.P. baron Van Zuijlen van Nijevelt (conservatief-liberaal) and Mr. J. Loudon (liberaal).
• The Netherlands had about 3.6 million citizens.
• January 26 » American Civil War: The state of Louisiana secedes from the Union.
• January 29 » Kansas is admitted as the 34th U.S. state.
• April 20 » American Civil War: Robert E. Lee resigns his commission in the United States Army in order to command the forces of the state of Virginia.
• May 13 » American Civil War: Queen Victoria of the United Kingdom issues a "proclamation of neutrality" which recognizes the Confederacy as having belligerent rights.
• September 3 » American Civil War: Confederate General Leonidas Polk invades neutral Kentucky, prompting the state legislature to ask for Union assistance.
• November 8 » American Civil War: The "Trent Affair": The USSSan Jacinto stops the British mail ship Trent and arrests two Confederate envoys, sparking a diplomatic crisis between the UK and US.

The temperature on May 21, 1861 was about 11.8 °C. There was 3 mm of rain. The airpressure was 77 cm mercury. The atmospheric humidity was 93%.