Erfgoed Leiden eo: Geboorteakten 1863-1872, archiefnummer 162.1.09, Archief van de ambtenaar van de Burgerlijke Stand van Nieuwkoop, 1811-1960 (1993), inventarisnummer 6, aktenummer 74
The temperature on August 1, 1864 was about 20.4 °C. The air pressure was 3.5 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 55%. 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.
February 27 » American Civil War: The first Northern prisoners arrive at the Confederate prison at Andersonville, Georgia.
April 18 » Battle of Dybbøl: A Prussian-Austrian army defeats Denmark and gains control of Schleswig. Denmark surrenders the province in the following peace settlement.
July 30 » American Civil War: Battle of the Crater: Union forces attempt to break Confederate lines at Petersburg, Virginia by exploding a large bomb under their trenches.
August 23 » American Civil War: The Union Navy captures Fort Morgan, Alabama, thus breaking Confederate dominance of all ports on the Gulf of Mexico except Galveston, Texas.
September 29 » The Treaty of Lisbon defines the boundaries between Spain and Portugal and abolishes the Couto Misto microstate.
November 29 » American Indian Wars: Sand Creek massacre: Colorado volunteers led by Colonel John Chivington massacre at least 150 Cheyenne and Arapaho noncombatants inside Colorado Territory.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I178972.php : accessed February 4, 2026), "Helena Groeneveld (1864-????)".
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