January 23 » The Malolos Constitution is inaugurated, establishing the First Philippine Republic. Emilio Aguinaldo is sworn in as its first President.
March 4 » Cyclone Mahina sweeps in north of Cooktown, Queensland, with a 12 metres (39ft) wave that reaches up to 5 kilometres (3.1mi) inland, killing over 300.
March 6 » Bayer registers "Aspirin" as a trademark.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
July 11 » Fiat founded by Giovanni Agnelli in Turin, Italy.
September 23 » The American Asiatic Squadron destroys a Filipino battery at the Battle of Olongapo.
Day of marriage December 19, 1930
The temperature on December 19, 1930 was between 1.2 °C and 6.0 °C and averaged 4.1 °C. There was 1.3 mm of rain during 1.9 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 30 » The Politburo of the Soviet Union orders the extermination of the Kulaks.
March 31 » The Motion Picture Production Code is instituted, imposing strict guidelines on the treatment of sex, crime, religion and violence in film, in the U.S., for the next thirty-eight years.
April 2 » After the mysterious death of Empress Zewditu, Haile Selassie is proclaimed emperor of Ethiopia.
May 24 » Amy Johnson lands in Darwin, Northern Territory, becoming the first woman to fly solo from England to Australia (she left on May 5 for the 11,000 mile flight).
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
December 7 » W1XAV in Boston, Massachusetts telecasts video from the CBS radio orchestra program, The Fox Trappers. The telecast also includes the first television commercial in the United States, an advertisement for I.J. Fox Furriers, who sponsored the radio show.
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/I111786.php : accessed March 1, 2026), "Wybrandus Haanstra (1899-????)".
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