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).
January 15 » Forty people die when ice covering the boating lake at Regent's Park, London, collapses.
February 17 » The first ship passes through the Suez Canal.
March 29 » Queen Victoria gives Royal Assent to the British North America Act which establishes Canada on July 1.
July 1 » The British North America Act takes effect as the Province of Canada, New Brunswick, and Nova Scotia join into confederation to create the modern nation of Canada. Sir John A. Macdonald is sworn in as the first Prime Minister of Canada. This date is commemorated annually in Canada as Canada Day, a national holiday.
July 17 » Harvard School of Dental Medicine is established in Boston, Massachusetts. It is the first dental school in the U.S. that is affiliated with a university.
August 28 » The United States takes possession of the (at this point unoccupied) Midway Atoll.
Day of marriage August 20, 1890
The temperature on August 20, 1890 was about 18.1 °C. There was 0.2 mm of rain. The air pressure was 1 kgf/m2 and came mainly from the southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 84%. Source: KNMI
January 1 » Eritrea is consolidated into a colony by the Italian government.
January 25 » Nellie Bly completes her round-the-world journey in 72 days.
June 1 » The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.
August 6 » At Auburn Prison in New York, murderer William Kemmler becomes the first person to be executed by electric chair.
August 7 » Anna Månsdotter became the last woman to be executed in Sweden for the 1889 Yngsjö murder.
December 29 » Wounded Knee Massacre on Pine Ridge Indian Reservation, 300 Lakota are killed by the United States 7th Cavalry Regiment.
Day of death November 7, 1947
The temperature on November 7, 1947 was between 6.6 °C and 11.7 °C and averaged 8.7 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
February 28 » February 28 Incident: In Taiwan, civil disorder is put down with the loss of an estimated 30,000 civilians.
April 1 » The only mutiny in the history of the Royal New Zealand Navy begins.
April 30 » In Nevada, Boulder Dam is renamed Hoover Dam.
May 3 » New post-war Japanese constitution goes into effect.
May 22 » Cold War: The Truman Doctrine goes into effect, aiding Turkey and Greece.
July 26 » Cold War: U.S. President Harry S. Truman signs the National Security Act of 1947 into United States law creating the Central Intelligence Agency, United States Department of Defense, United States Air Force, Joint Chiefs of Staff, and the United States National Security Council.
When copying data from this family tree, please include a reference to the origin: W. Rovers, "Family tree Ro(o)vers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_rovers/I24146.php : accessed February 23, 2026), "Petronella Johanna Maria Roovers (1867-1947)".
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