April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
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 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of death June 3, 1987
The temperature on June 3, 1987 was between 10.6 °C and 16.6 °C and averaged 13.5 °C. There was 1.2 mm of rain during 2.0 hours. There was -0.1 hours of sunshine (0%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
April 11 » The London Agreement is secretly signed between Israeli Foreign Affairs Minister Shimon Peres and King Hussein of Jordan.
April 19 » The Simpsons first appear as a series of shorts on The Tracey Ullman Show, first starting with Good Night.
May 3 » A crash by Bobby Allison at the Talladega Superspeedway, Alabama fencing at the start-finish line would lead NASCAR to develop the restrictor plate for the following season both at Daytona International Speedway and Talladega.
May 5 » Iran–Contra affair: Start of Congressional televised hearings in the United States of America
June 12 » The Central African Republic's former emperor Jean-Bédel Bokassa is sentenced to death for crimes he had committed during his 13-year rule.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Geurt Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/geurt-jacobs/I44766.php : accessed January 28, 2026), "Aalt Leijenhorst (1897-1987)".
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