The temperature on August 5, 1861 was about 26.4 °C. The air pressure was 4 kgf/m2 and came mainly from the south. The airpressure was 76 cm mercury. The atmospheric humidity was 56%. Source: KNMI
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).
February 18 » With Italian unification almost complete, Victor Emmanuel II of Piedmont, Savoy and Sardinia assumes the title of King of Italy.
April 6 » First performance of Arthur Sullivan's debut success, his suite of incidental music for The Tempest, leading to a career that included the famous Gilbert and Sullivan operas.
June 17 » American Civil War: Battle of Vienna, Virginia.
July 16 » American Civil War: At the order of President Abraham Lincoln, Union troops begin a 25-mile march into Virginia for what will become the First Battle of Bull Run, the first major land battle of the war.
August 29 » American Civil War: The Battle of Hatteras Inlet Batteries gives Federal forces control of Pamlico Sound.
September 6 » American Civil War: Forces under Union General Ulysses S. Grant bloodlessly capture Paducah, Kentucky, giving the Union control of the Tennessee River's mouth.
Day of death August 20, 1867
The temperature on August 20, 1867 was about 30.4 °C. The air pressure was 2 kgf/m2 and came mainly from the south. The airpressure was 76 cm mercury. The atmospheric humidity was 53%. Source: KNMI
From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
February 28 » Seventy years of Holy See–United States relations are ended by a Congressional ban on federal funding of diplomatic envoys to the Vatican and are not restored until January 10, 1984.
March 29 » Queen Victoria gives Royal Assent to the British North America Act which establishes Canada on July 1.
June 8 » Coronation of Franz Joseph as King of Hungary following the Austro-Hungarian compromise (Ausgleich).
September 28 » Toronto becomes the capital of Ontario, having also been the capital of Ontario's predecessors since 1796.
November 23 » The Manchester Martyrs are hanged in Manchester, England, for killing a police officer while freeing two Irish Republican Brotherhood members from custody.
December 13 » A Fenian bomb explodes in Clerkenwell, London, killing six.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P19051.php : accessed January 20, 2026), "Helen Howard Potter (1861-1867)".
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