February 2 » The Australian Premiers' Conference held in Melbourne decides to locate Australia's capital city, Canberra, between Sydney and Melbourne.
June 7 » American Temperance crusader Carrie Nation begins her campaign of vandalizing alcohol-serving establishments by destroying the inventory in a saloon in Kiowa, Kansas.
July 29 » The First Hague Convention is signed.
September 13 » Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m - 17,058ft), the highest peak of Mount Kenya.
December 2 » Philippine–American War: The Battle of Tirad Pass, termed "The Filipino Thermopylae", is fought.
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 October 22, 1915
The temperature on October 22, 1915 was between -1.4 °C and 12.4 °C and averaged 4.3 °C. There was 6.0 hours of sunshine (58%). The average windspeed was 2 Bft (weak wind) 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.
March 20 » Albert Einstein publishes his general theory of relativity.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
July 7 » Colombo Town Guard officer Henry Pedris is executed in British Ceylon for allegedly inciting persecution of Muslims.
July 7 » The First Battle of the Isonzo comes to an end.
July 16 » Henry James becomes a British citizen to highlight his commitment to Britain during the first World War.
August 17 » A Category 4 hurricane hits Galveston, Texas with winds at 135 miles per hour (217km/h).
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/I101990.php : accessed October 16, 2026), "Petrus de Boer (1899-1915)".
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