January 18 » James Cook is the first known European to discover the Hawaiian Islands, which he names the "Sandwich Islands".
May 1 » American Revolution: The Battle of Crooked Billet begins in Hatboro, Pennsylvania.
July 3 » American Revolutionary War: Iroquois allied to Britain kill 360 people in the Wyoming Valley massacre.
August 21 » American Revolutionary War: British forces begin besieging the French outpost at Pondichéry.
September 17 » The Treaty of Fort Pitt is signed. It is the first formal treaty between the United States and a Native American tribe.
September 19 » The Continental Congress passes the first United States federal budget.
Day of death August 1, 1861
The temperature on August 1, 1861 was about 18.7 °C. The air pressure was 0.5 kgf/m2 and came mainly from the south-southwest. The airpressure was 77 cm mercury. The atmospheric humidity was 73%. 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 23 » President-elect Abraham Lincoln arrives secretly in Washington, D.C., after the thwarting of an alleged assassination plot in Baltimore, Maryland.
March 30 » Discovery of the chemical elements: Sir William Crookes announces his discovery of thallium.
May 29 » The Hong Kong General Chamber of Commerce is founded, in Hong Kong.
June 3 » American Civil War: Battle of Philippi (also called the Philippi Races): Union forces rout Confederate troops in Barbour County, Virginia, now West Virginia.
June 10 » American Civil War: Battle of Big Bethel: Confederate troops under John B. Magruder defeat a much larger Union force led by General Ebenezer W. Pierce in Virginia.
August 6 » Britain imposes the Lagos Treaty of Cession to suppress slavery in what is now Nigeria.
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/P11283.php : accessed January 3, 2026), "Nathan Post Kelsey (1778-1861)".
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