The temperature on February 15, 1872 was about 5.3 °C. The air pressure was 2 kgf/m2 and came mainly from the east-northeast. The atmospheric humidity was 78%. Source: KNMI
In The Netherlands , there was from January 4, 1871 to July 6, 1872 the cabinet Thorbecke III, with Mr. J.R. Thorbecke (liberaal) as prime minister.
From July 6, 1872 till August 27, 1874 the Netherlands had a cabinet De Vries - Fransen van de Putte with the prime ministers Mr. G. de Vries Azn. (liberaal) and I.D. Fransen van de Putte (liberaal).
March 22 » Illinois becomes the first state to require gender equality in employment.
May 10 » Victoria Woodhull becomes the first woman nominated for President of the United States.
June 14 » Trade unions are legalized in Canada.
November 5 » Women's suffrage in the United States: In defiance of the law, suffragist Susan B. Anthony votes for the first time, and is later fined $100.
November 18 » Susan B. Anthony and 14 other women are arrested for voting illegally in the United States presidential election of 1872.
December 4 » The crewless American brigantine Mary Celeste, drifting in the Atlantic, is discovered by the Canadian brig Dei Gratia. The ship has been abandoned for nine days but is only slightly damaged. Her master Benjamin Briggs and all nine others known to have been on board are never accounted for.
Day of marriage May 20, 1897
The temperature on May 20, 1897 was about 18.2 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 61%. Source: KNMI
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
August 2 » Anglo-Afghan War: The Siege of Malakand ends when a relief column is able to reach the British garrison in the Malakand states.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
December 6 » London becomes the world's first city to host licensed taxicabs.
Day of death December 12, 1938
The temperature on December 12, 1938 was between 6.7 °C and 11.2 °C and averaged 8.3 °C. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
March 12 » Anschluss: German troops occupy and absorb Austria.
May 25 » Spanish Civil War: The bombing of Alicante kills 313 people.
June 7 » The Douglas DC-4E makes its first test flight.
July 20 » The United States Department of Justice files suit in New York City against the motion picture industry charging violations of the Sherman Antitrust Act in regards to the studio system. The case would eventually result in a break-up of the industry in 1948.
August 18 » The Thousand Islands Bridge, connecting New York, United States with Ontario, Canada over the Saint Lawrence River, is dedicated by U.S. President Franklin D. Roosevelt.
November 14 » The Lions Gate Bridge, connecting Vancouver to the North Shore region, opens to traffic.
When copying data from this family tree, please include a reference to the origin: Sim Mostert, "Genealogy Pot en Smit", database, Genealogy Online (https://www.genealogieonline.nl/genealogie_pot_smit/I3876.php : accessed October 13, 2026), "PETRUS LEONARDUS van ROON (1872-1938)".
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