March 18 » Macario Sakay issues Presidential Order No. 1 of his Tagalog Republic.
April 20 » Pierre and Marie Curie refine radium chloride.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
August 9 » Edward VII and Alexandra of Denmark are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
October 24 » Guatemala's Santa María Volcano begins to erupt, becoming the third-largest eruption of the 20th century.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
Day of marriage March 25, 1926
The temperature on March 25, 1926 was between -1.7 °C and 11.9 °C and averaged 4.8 °C. There was 5.1 hours of sunshine (41%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
May 9 » Admiral Richard E. Byrd and Floyd Bennett claim to have flown over the North Pole (later discovery of Byrd's diary appears to cast some doubt on the claim.)
May 18 » Evangelist Aimee Semple McPherson disappears in Venice, California.
May 28 » The 28 May 1926 coup d'état: Ditadura Nacional is established in Portugal to suppress the unrest of the First Republic.
June 28 » Mercedes-Benz is formed by Gottlieb Daimler and Karl Benz merging their two companies.
September 25 » The international Convention to Suppress the Slave Trade and Slavery is first signed.
December 17 » Antanas Smetona assumes power in Lithuania as the 1926 coup d'état is successful.
Day of death December 15, 1970
The temperature on December 15, 1970 was between 2.3 °C and 6.8 °C and averaged 5.0 °C. The heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
January 22 » The Boeing 747, the world's first "jumbo jet", enters commercial service for launch customer Pan American Airways with its maiden voyage from John F. Kennedy International Airport to London Heathrow Airport.
April 10 » Paul McCartney announces that he is leaving The Beatles for personal and professional reasons.
May 14 » Andreas Baader is freed from custody by Ulrike Meinhof, Gudrun Ensslin and others, a pivotal moment in the formation of the Red Army Faction.
August 29 » Chicano Moratorium against the Vietnam War, East Los Angeles, California. Police riot kills three people, including journalist Rubén Salazar.
September 4 » Salvador Allende is elected President of Chile.
November 4 » Salvador Allende takes office as President of Chile, the first Marxist to become president of a Latin American country through open elections.
When copying data from this family tree, please include a reference to the origin: Rob Slotemaker, "Family tree Slotemaker", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-slotemaker/I49.php : accessed January 26, 2026), "Margaretha "Gre" Slotemaker (1902-1970)".
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