About the day » Wednesday April 12, 1865Calender converter

• Anna Mathilda de Gelder, Semarang, Java, Nederlands-Indië († 1898)
• Albert Bos, Smilde, Drenthe, Nederland († 1945)
• Adriana Maria Naderman, Alkemade,, Zuid-Holland, Nederland († 1957)
• Albert Bos, Smilde († 1945)
• Andries van Berkum, Hoorn († 1910)
• Antje Duijnker, Westerland († 1930)
• Anna Maria Fitters, Nieuwkuijk († 1942)
• Aagje-Maria van der Wulp, 's-Gravendeel, Nederland († 1868)
• Adriana van Doorn, Barwoutswaarder, Utrecht, Nederland († 1929)
• Adolphus NAEYE

• Annegjen STUVE (43), Oldemarkt(Ov)
• Anna Waardenburg (0), Oud-Beijerland, Zuid-Holland, Nederland
• Aaltjen van Els (74), Steenwijk
• Antonius Wijns (52), Kapellen (B)
• Auke Beerts Wiersma (23), Marrum
• Augustin LeDoux (84), Saint-Hubert, Longueuil, Quebec, Canada
• Aaltje Ariensdr Bobeldijk (2)
• Antonius Wyns (52), Kapellen, Provincie Antwerpen
• Berendina Struik (1), Holten
• Abraham Bijl (0), Nieuwenhoorn, Zuid-Holland, Nederland

• 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)
• 1880 » Addie Joss, American baseball player and journalist († 1911)

• 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)
• 1912 » Clara Barton, American nurse and humanitarian, founded the American Red Cross (b. 1821)

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. Gerardus
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. Neeltje
13. Antje
14. Trijntje
15. Petronella
16. Elizabeth

• Koning Willem III (Huis van Oranje-Nassau) was from 1849 till 1890 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from February 1, 1862 to February 10, 1866 the cabinet Thorbecke II, with Mr. J.R. Thorbecke (liberaal) as prime minister.
• The Netherlands had about 3.6 million citizens.
• April 20 » Astronomer Angelo Secchi demonstrates the Secchi disk, which measures water clarity, aboard Pope Pius IX's yacht, the L'Immaculata Concezion.
• May 1 » The Empire of Brazil, Argentina, and Uruguay sign the Treaty of the Triple Alliance.
• May 5 » American Civil War: The Confederate government was declared dissolved at Washington, Georgia.
• May 9 » American Civil War: President Andrew Johnson issues a proclamation ending belligerent rights of the rebels and enjoining foreign nations to intern or expel Confederate ships.
• December 4 » North Carolina ratifies 13th Amendment to the U.S. Constitution, followed soon by Georgia, and U.S. slaves were legally free within two weeks.
• December 17 » First performance of the Unfinished Symphony by Franz Schubert.

The temperature on April 12, 1865 was about 12.2 °C. The air pressure was 1 kgf/m² and came mainly from the east-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 58%.