June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage September 15, 1915
The temperature on September 15, 1915 was between 9.3 °C and 17.8 °C and averaged 14.1 °C. There was 0.5 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. 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 18 » Japan issues the "Twenty-One Demands" to the Republic of China in a bid to increase its power in East Asia.
January 31 » World War I: Germany is the first to make large-scale use of poison gas in warfare in the Battle of Bolimów against Russia.
May 6 » Babe Ruth, then a pitcher for the Boston Red Sox, hits his first major league home run.
July 28 » The United States begins a 19-year occupation of Haiti.
September 12 » French soldiers rescue over 4,000 Armenian Genocide survivors stranded on Musa Dagh.
December 20 » World War I: The last Australian troops are evacuated from Gallipoli.
Day of death August 1, 1963
The temperature on August 1, 1963 was between 9.6 °C and 23.8 °C and averaged 17.6 °C. There was 9.9 hours of sunshine (64%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
July 1 » The British Government admits that former diplomat Kim Philby had worked as a Soviet agent.
August 24 » Buddhist crisis: As a result of the Xá Lợi Pagoda raids, the US State Department cables the United States Embassy, Saigon to encourage Army of the Republic of Vietnam generals to launch a coup against President Ngô Đình Diệm if he did not remove his brother Ngô Đình Nhu.
August 31 » Crown Colony of North Borneo (now Sabah) achieves self governance.
October 3 » A violent coup in Honduras begins two decades of military rule.
November 1 » The 1963 South Vietnamese coup begins.
November 25 » President John F. Kennedy is buried at Arlington National Cemetery in Arlington County, Virginia, across the Potomac River from Washington, D.C.; his assassin, Lee Harvey Oswald, is buried on the same day in Fort Worth, Texas.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I5046.php : accessed January 24, 2026), "Ricina Onstwedde (1897-1963)".
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