The temperature on March 12, 1861 was about 6.9 °C. The air pressure was 5.5 kgf/m2 and came mainly from the northwest. The airpressure was 74 cm mercury. The atmospheric humidity was 52%. 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).
January 9 » American Civil War: "Star of the West" incident occurs near Charleston, South Carolina.
January 26 » American Civil War: The state of Louisiana secedes from the Union.
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.
April 15 » President Abraham Lincoln calls for 75,000 Volunteers to quell the insurrection that soon became the American Civil War.
October 9 » American Civil War: Union troops repel a Confederate attempt to capture Fort Pickens.
November 1 » American Civil War: U.S. President Abraham Lincoln appoints George B. McClellan as the commander of the Union Army, replacing General Winfield Scott.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I492995.php : accessed February 17, 2026), "Hendrik Arjens Zwart (± 1790-1861)".
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