January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
April 14 » James Cash Penney opens his first store in Kemmerer, Wyoming.
April 20 » Pierre and Marie Curie refine radium chloride.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
Day of marriage May 14, 1927
The temperature on May 14, 1927 was between 2.4 °C and 10.7 °C and averaged 7.1 °C. There was 2.9 mm of rain. There was -0.1 hours of sunshine (0%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
April 12 » Shanghai massacre of 1927: Chiang Kai-shek orders the Chinese Communist Party members executed in Shanghai, ending the First United Front.
May 21 » Charles Lindbergh touches down at Le Bourget Field in Paris, completing the world's first solo nonstop flight across the Atlantic Ocean.
July 23 » The first station of the Indian Broadcasting Company goes on the air in Bombay.
December 2 » Following 19 years of Ford Model T production, the Ford Motor Company unveils the Ford Model A as its new automobile.
December 8 » The Brookings Institution, one of the United States' oldest think tanks, is founded through the merger of three organizations that had been created by philanthropist Robert S. Brookings.
Day of death April 15, 1945
The temperature on April 15, 1945 was between 9.4 °C and 13.8 °C and averaged 12.2 °C. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
In The Netherlands , there was from February 23, 1945 to June 24, 1945 the cabinet Gerbrandy III, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
January 17 » World War II: The Vistula–Oder Offensive forces German troops out of Warsaw.
March 3 » World War II: American and Filipino troops recapture Manila.
April 23 » World War II: Adolf Hitler's designated successor, Hermann Göring, sends him a telegram asking permission to take leadership of the Third Reich. Martin Bormann and Joseph Goebbels advise Hitler that the telegram is treasonous.
May 5 » World War II: The Prague uprising begins as an attempt by the Czech resistance to free the city from German occupation.
June 7 » King Haakon VII of Norway returns from exactly five years in exile during World War II.
September 2 » World War II: Combat ends in the Pacific Theater: The Japanese Instrument of Surrender is signed by Japanese Foreign Minister Mamoru Shigemitsu and accepted aboard the battleship USSMissouri in Tokyo Bay.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I169714.php : accessed October 20, 2026), "Jakob de Graaf (1902-1945)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.