The temperature on May 10, 1867 was about 16.3 °C. The air pressure was 1 kgf/m2 and came mainly from the east-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 75%. 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).
February 13 » Work begins on the covering of the Senne, burying Brussels's primary river and creating the modern central boulevards.
March 1 » Nebraska becomes the 37th U.S. state; Lancaster, Nebraska is renamed Lincoln and becomes the state capital.
September 28 » Toronto becomes the capital of Ontario, having also been the capital of Ontario's predecessors since 1796.
October 21 » The Medicine Lodge Treaty is signed by southern Great Plains Indian leaders. The treaty requires Native American Plains tribes to relocate to a reservation in western Oklahoma.
November 3 » Giuseppe Garibaldi and his followers are defeated in the Battle of Mentana and fail to end the Pope's Temporal power in Rome (it would be achieved three years later).
December 2 » At Tremont Temple in Boston, British author Charles Dickens gives his first public reading in the United States.
When copying data from this family tree, please include a reference to the origin: Bob Smith, "Family tree Smith", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-smith/I29730.php : accessed February 21, 2026), "Oscar Constant Marinus/Heupner de Groot Heupner (1867-????)".
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