February 20 » The Postal Service Act, establishing the United States Post Office Department, is signed by United States President George Washington.
March 29 » King Gustav III of Sweden dies after being shot in the back at a midnight masquerade ball at Stockholm's Royal Opera 13 days earlier. He is succeeded by Gustav IV Adolf.
April 25 » "La Marseillaise" (the French national anthem) is composed by Claude Joseph Rouget de Lisle.
July 25 » The Brunswick Manifesto is issued to the population of Paris promising vengeance if the French royal family is harmed.
August 16 » Maximilien de Robespierre presents the petition of the Commune of Paris to the Legislative Assembly, which demanded the formation of a revolutionary tribunal.
October 13 » In Washington, D.C., the cornerstone of the United States Executive Mansion (known as the White House since 1818) is laid.
Day of death April 27, 1860
The temperature on April 27, 1860 was about 8.5 °C. The air pressure was 1.5 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 57%. Source: KNMI
From March 18, 1858 till February 23, 1860 the Netherlands had a cabinet Rochussen - Van Bosse with the prime ministers J.J. Rochussen (conservatief-liberaal) and Mr. P.P. van Bosse (liberaal).
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).
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/P11055.php : accessed February 7, 2026), "Bradbury S Dyer (1792-1860)".
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