About the day » Friday April 12, 1861Calender converter

• Andreas Hendrik Joan Geertruid Alma, Culemborg, Gemeente Culemborg, Gelderland, Nederland († 1912)
• Andries Jacobus Pool († 1861)
• * Thomas de Witte, Ellemeet († 1945)
• Aleida Euphemia Leus, Almelo († 1909)
• Albertha Euphemia Leus († 1909)
• Andries van der Kraats, Gemeente Boskoop, Zuid-Holland, Nederland († 1933)
• * Hendrina Hendrika de Wit, Schijndel († 1929)
• Nootveld, Beerze, Overijssel, Nederland, Nederland († 1861)
• aagje BOOMAN, zuid beijerland († 1861)
• Aaltje Hagenouw, Uitwierde, Groningen, Nederland († 1933)

• Aalbert Fiet (86), Rheden, GLD, Nederland
• Anna Diderica Barones Van Heeckeren Van Brandsenburg (86), Breda, Noord-Brabant, Nederland NL
• Anna Maria Lembrechts (39), Pulderbos
• Aardt Nikkelen (39), Nijmegen, Nederland
• Antonia DE MEERSCHMAN (76), Liedekerke,1770,Brabant Flamand,Bruxelles Capitale,BELGIQUE
• Antonie Peek (0), Everdingen
• Anna Antonie Doodt (1), Varel, Germany
• Albert Jan Meijer (2), Wapenveld, Heerde, Gelderland, Nederland
• Adriaan van der Sluijs (42), Dongen, Noord-Brabant, Nederland
• Aalt Blom (24), Nijkerk

• 1845 » Gustaf Cederström, Swedish painter († 1933)
• 1851 » Edward Walter Maunder, English astronomer and author († 1928)
• 1851 » José Gautier Benítez, Puerto Rican soldier and poet († 1880)
• 1852 » Ferdinand von Lindemann, German mathematician and academic († 1939)
• 1856 » Martin Conway, 1st Baron Conway of Allington, English mountaineer, cartographer, and politician († 1937)
• 1863 » Raul Pompeia, Brazilian writer († 1895)
• 1868 » Akiyama Saneyuki, Japanese admiral († 1918)
• 1869 » Henri Désiré Landru, French serial killer († 1922)
• 1871 » Ioannis Metaxas, Greek general and politician, 130th Prime Minister of Greece († 1941)
• 1874 » William B. Bankhead, American lawyer and politician, 47th Speaker of the United States House of Representatives († 1940)

• 1817 » Charles Messier, French astronomer and academic (b. 1730)
• 1850 » Adoniram Judson, American lexicographer and missionary (b. 1788)
• 1866 » Peter Hesketh-Fleetwood, English politician, founded Fleetwood (b. 1801)
• 1872 » Nikolaos Mantzaros, Greek composer and theorist (b. 1795)
• 1878 » William M. Tweed, American lawyer and politician (b. 1823)
• 1879 » Richard Taylor, American general (b. 1826)
• 1885 » William Crowther, Dutch-Australian politician, 14th Premier of Tasmania (b. 1817)
• 1898 » Elzéar-Alexandre Taschereau, Canadian cardinal (b. 1820)
• 1902 » Marie Alfred Cornu, French physicist and academic (b. 1842)
• 1906 » Mahesh Chandra Nyayratna Bhattacharyya, Indian scholar, academic, and philanthropist (b. 1836)

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.
• April 13 » American Civil War: Fort Sumter surrenders to Confederate forces.
• April 15 » President Abraham Lincoln calls for 75,000 Volunteers to quell the insurrection that soon became the American Civil War.
• May 29 » The Hong Kong General Chamber of Commerce is founded, in Hong Kong.
• August 6 » Britain imposes the Lagos Treaty of Cession to suppress slavery in what is now Nigeria.
• August 10 » American Civil War: Battle of Wilson's Creek: A mixed force of Confederate, Missouri State Guard, and Arkansas State troops defeat outnumbered attacking Union forces in the southwestern part of the state.
• November 7 » The first Melbourne Cup horse race is held in Melbourne, Australia.

The temperature on April 12, 1861 was about 6.3 °C. The air pressure was 2.5 kgf/m² and came mainly from the north-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 94%.