The temperature on April 25, 1915 was between 7.0 °C and 10.1 °C and averaged 8.3 °C. There was 9.6 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 26 » The Rocky Mountain National Park is established by an act of the U.S. Congress.
March 26 » The Vancouver Millionaires win the 1915 Stanley Cup Finals, the first championship played between the Pacific Coast Hockey Association and the National Hockey Association.
May 7 » World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people, including 128 Americans. Public reaction to the sinking turns many former pro-Germans in the United States against the German Empire.
June 5 » Denmark amends its constitution to allow women's suffrage.
September 5 » The pacifist Zimmerwald Conference begins.
October 14 » World War I: Bulgaria joins the Central Powers.
Day of marriage April 22, 1938
The temperature on April 22, 1938 was between 0.2 °C and 7.7 °C and averaged 4.6 °C. There was 4.7 mm of rain during 7.4 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
March 27 » Second Sino-Japanese War: The Battle of Taierzhuang begins, resulting several weeks later in the war's first major Chinese victory over Japan.
April 10 » The 1938 German parliamentary election and referendum seeks approval for a single list of Nazi candidates and the recent annexation of Austria.
July 17 » Douglas Corrigan takes off from Brooklyn to fly the "wrong way" to Ireland and becomes known as "Wrong Way" Corrigan.
September 12 » Adolf Hitler demands autonomy and self-determination for the Germans of the Sudetenland region of Czechoslovakia.
November 14 » The Lions Gate Bridge, connecting Vancouver to the North Shore region, opens to traffic.
When copying data from this family tree, please include a reference to the origin: Jaap van Tuyll, "Descendants Proost", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-proost/I423.php : accessed February 12, 2026), "Willem Proost (1915-)".
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