April 1 » In New York City, the United States House of Representatives achieves its first quorum and elects Frederick Muhlenberg of Pennsylvania as its first Speaker.
July 14 » Alexander Mackenzie finally completes his journey to the mouth of the great river he hoped would take him to the Pacific, but which turns out to flow into the Arctic Ocean. Later named after him, the Mackenzie is the second-longest river system in North America.
August 26 » The Declaration of the Rights of Man and of the Citizen is approved by the National Constituent Assembly of France.
September 11 » Alexander Hamilton is appointed the first United States Secretary of the Treasury.
October 2 » The United States Bill of Rights is sent to the various States for ratification.
November 21 » North Carolina ratifies the United States Constitution and is admitted as the 12th U.S. state.
Day of death July 31, 1867
The temperature on July 31, 1867 was about 12.3 °C. The air pressure was 1 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 81%. 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).
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/P25497.php : accessed January 6, 2026), "Catharine Maria Sedgwick (1789-1867)".
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