January 17 » The United States takes possession of Wake Island in the Pacific Ocean.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
March 31 » Malolos, capital of the First Philippine Republic, is captured by American forces.
June 12 » New Richmond tornado: The eighth deadliest tornado in U.S. history kills 117 people and injures around 200.
July 26 » Ulises Heureaux, the 27th President of the Dominican Republic, is assassinated.
December 11 » Second Boer War: In the Battle of Magersfontein the Boers commanded by general Piet Cronjé inflict a defeat on the forces of the British Empire commanded by Lord Methuen trying to relieve the Siege of Kimberley.
Day of death April 12, 1991
The temperature on April 12, 1991 was between 8.2 °C and 22.0 °C and averaged 14.9 °C. There was 11.8 hours of sunshine (86%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
When copying data from this family tree, please include a reference to the origin: Hans Docter, "Family tree Docter", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-docter/I228.php : accessed February 7, 2026), "Adriana Petronella Bergwerff (1899-1991)".
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