February 4 » The Philippine–American War begins with the Battle of Manila.
February 16 » Iceland's first football club, Knattspyrnufélag Reykjavíkur, is founded.
February 22 » Filipino forces led by General Antonio Luna launch counterattacks for the first time against the American forces during the Philippine–American War. The Filipinos fail to regain Manila from the Americans.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
April 18 » The St. Andrew's Ambulance Association is granted a royal charter by Queen Victoria.
July 29 » The First Hague Convention is signed.
Day of death June 13, 1937
The temperature on June 13, 1937 was between 14.1 °C and 24.7 °C and averaged 18.6 °C. There was 8.5 hours of sunshine (51%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
April 12 » Sir Frank Whittle ground-tests the first jet engine designed to power an aircraft, at Rugby, England.
June 3 » The Duke of Windsor marries Wallis Simpson.
July 6 » Spanish Civil War: Battle of Brunete: The battle begins with Spanish Republican troops going on the offensive against the Nationalists to relieve pressure on Madrid.
July 7 » The Marco Polo Bridge Incident provides the Imperial Japanese Army with a pretext for starting the Second Sino-Japanese War.
July 8 » Turkey, Iran, Iraq and Afghanistan sign the Treaty of Saadabad.
July 26 » Spanish Civil War: End of the Battle of Brunete with the Nationalist victory.
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/I105542.php : accessed December 31, 2025), "Dieuwke "Dora" Wiersma (1899-1937)".
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