March 21 » A fire in New Orleans leaves most of the town in ruins.
April 7 » American pioneers to the Northwest Territory establish Marietta, Ohio as the first permanent American settlement in the Northwest Territory.
April 28 » Maryland becomes the seventh state to ratify the United States Constitution.
June 21 » New Hampshire becomes the ninth state to ratify the Constitution of the United States.
June 25 » Virginia becomes the tenth state to ratify the United States Constitution.
July 25 » Wolfgang Amadeus Mozart completes his Symphony No. 40 in G minor (K550).
Day of death July 12, 1863
The temperature on July 12, 1863 was about 23.8 °C. The air pressure was 0.5 kgf/m2 and came mainly from the north-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 56%. Source: KNMI
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.
January 4 » The New Apostolic Church, a Christian and chiliastic church, is established in Hamburg, Germany.
January 26 » American Civil War: Governor of Massachusetts John Albion Andrew receives permission from the Secretary of War to raise a militia organization for men of African descent.
May 27 » American Civil War: First Assault on the Confederate works at the Siege of Port Hudson.
July 30 » American Indian Wars: Representatives of the United States and tribal leaders including Chief Pocatello (of the Shoshone) sign the Treaty of Box Elder.
September 16 » Robert College, in Istanbul, the first American educational institution outside the United States, is founded by Christopher Robert, an American philanthropist.
November 24 » American Civil War: Battle of Lookout Mountain: Near Chattanooga, Tennessee, Union forces under General Ulysses S. Grant capture Lookout Mountain and begin to break the Confederate siege of the city led by General Braxton Bragg.
When copying data from this family tree, please include a reference to the origin: Rob van Koert, "Family tree Van Koert", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-koert/I40969.php : accessed March 4, 2026), "Mattheus "Matthijs" van Aart (1788-1863)".
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