July 3 » Idaho is admitted as the 43rd U.S. state.
July 26 » In Buenos Aires, Argentina the Revolución del Parque takes place, forcing President Miguel Ángel Juárez Celman's resignation.
October 11 » In Washington, D.C., the Daughters of the American Revolution is founded.
November 23 » King William III of the Netherlands dies without a male heir and a special law is passed to allow his daughter Princess Wilhelmina to succeed him.
December 15 » Hunkpapa Lakota leader Sitting Bull is killed on Standing Rock Indian Reservation, leading to the Wounded Knee Massacre.
December 22 » Cornwallis Valley Railway begins operation between Kentville and Kingsport, Nova Scotia.
Day of marriage October 17, 1914
The temperature on October 17, 1914 was between 6.6 °C and 12.6 °C and averaged 9.8 °C. There was 0.6 hours of sunshine (6%). 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.
March 1 » The Republic of China joins the Universal Postal Union.
August 15 » World War I: Beginning of the Battle of Cer, the first Allied victory of World War I.
August 24 » World War I: German troops capture Namur.
September 16 » World War I: The Siege of Przemyśl (present-day Poland) begins.
September 18 » The Irish Home Rule Act becomes law, but is delayed until after World War I.
November 7 » The first issue of The New Republic is published.
Day of death September 22, 1978
The temperature on September 22, 1978 was between 12.0 °C and 18.2 °C and averaged 15.6 °C. There was 0.1 mm of rain during 1.0 hours. There was 0.4 hours of sunshine (3%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
April 27 » The Saur Revolution begins in Afghanistan, ending the following morning with the murder of Afghan President Mohammed Daoud Khan and the establishment of the Democratic Republic of Afghanistan.
May 8 » The first ascent of Mount Everest without supplemental oxygen, by Reinhold Messner and Peter Habeler.
May 12 » In Zaire, rebels occupy the city of Kolwezi, the mining center of the province of Shaba (now known as Katanga); the local government asks the US, France and Belgium to restore order.
August 22 » The Sandinista National Liberation Front (FLSN) occupies national palace in Nicaragua.
September 16 » The 7.4 Mw Tabas earthquake affects the city of Tabas, Iran with a maximum Mercalli intensity of IX (Violent). At least 15,000 people were killed.
December 11 » The Lufthansa heist is committed by a group led by Lucchese family associate Jimmy Burke. It was the largest cash robbery ever committed on American soil, at that time.
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/I62255.php : accessed October 8, 2026), "Sjoerd Helmhout (1890-1978)".
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