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 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage July 1, 1921
The temperature on July 1, 1921 was between 9.6 °C and 18.4 °C and averaged 13.1 °C. There was 3.0 hours of sunshine (18%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 9 » Greco-Turkish War: The First Battle of İnönü, the first battle of the war, begins near Eskişehir in Anatolia.
March 17 » The Second Polish Republic adopts the March Constitution.
March 19 » Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
August 14 » Tannu Uriankhai, later Tuvan People's Republic is established as a completely independent country (which is supported by Soviet Russia).
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
Day of death July 30, 1980
The temperature on July 30, 1980 was between 12.6 °C and 20.3 °C and averaged 17.5 °C. There was 1.4 mm of rain during 1.5 hours. There was -0.1 hours of sunshine (0%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
February 2 » Reports surface that the FBI is targeting allegedly corrupt Congressmen in the Abscam operation.
March 23 » Archbishop Óscar Romero of El Salvador gives his famous speech appealing to men of the El Salvadoran armed forces to stop killing the Salvadorans.
June 1 » Cable News Network (CNN) begins broadcasting.
June 3 » An explosive device is detonated at the Statue of Liberty. The FBI suspects Croatian nationalists.
July 8 » The inaugural 1980 State of Origin game is won by Queensland who defeat New South Wales 20–10 at Lang Park.
December 8 » Former Beatle John Lennon is murdered in front of The Dakota in New York City.
When copying data from this family tree, please include a reference to the origin: Jean Wasserman, "Family tree Wasserman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-wasserman/I5641.php : accessed February 17, 2026), "Anna Elisabeth Claessens (1897-1980)".
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.