May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
August 2 » Anglo-Afghan War: The Siege of Malakand ends when a relief column is able to reach the British garrison in the Malakand states.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
Day of marriage September 18, 1917
The temperature on September 18, 1917 was between 14.1 °C and 17.0 °C and averaged 15.5 °C. There was 2.5 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-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.
March 2 » The enactment of the Jones–Shafroth Act grants Puerto Ricans United States citizenship.
May 13 » Three children report the first apparition of Our Lady of Fátima in Fátima, Portugal.
June 28 » World War I: Greece joins the Allied powers.
July 20 » World War I: The Corfu Declaration, which leads to the creation of the post-war Kingdom of Yugoslavia, is signed by the Yugoslav Committee and Kingdom of Serbia.
October 4 » World War I: The Battle of Broodseinde is fought between the British and German armies in Flanders.
November 7 » The Gregorian calendar date of the October Revolution, which gets its name from the Julian calendar date of 25 October. On this date in 1917, the Bolsheviks storm the Winter Palace.
When copying data from this family tree, please include a reference to the origin: Alfred Groot, "Family tree Groot", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-groot/I67.php : accessed February 11, 2026), "Frederik Kommer (1897-????)".
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