In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
March 31 » The United Kingdom establishes the Bechuanaland Protectorate.
August 14 » Japan's first patent is issued to the inventor of a rust-proof paint.
September 29 » The first practical public electric tramway in the world is opened in Blackpool, England.
November 16 » Canadian rebel leader of the Métis and "Father of Manitoba" Louis Riel is executed for treason.
November 17 » Serbo-Bulgarian War: The decisive Battle of Slivnitsa begins.
November 19 » Serbo-Bulgarian War: Bulgarian victory in the Battle of Slivnitsa solidifies the unification between the Principality of Bulgaria and Eastern Rumelia.
Day of marriage June 13, 1919
The temperature on June 13, 1919 was between 8.3 °C and 14.6 °C and averaged 11.9 °C. There was 2.6 mm of rain. The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 15 » Great Molasses Flood: A wave of molasses released from an exploding storage tank sweeps through Boston, Massachusetts, killing 21 and injuring 150.
January 31 » The Battle of George Square takes place in Glasgow, Scotland, during a campaign for shorter working hours.
February 14 » The Polish–Soviet War begins.
February 26 » President Woodrow Wilson signs an act of Congress establishing the Grand Canyon National Park.
May 29 » Albert Einstein's theory of general relativity is tested (later confirmed) by Arthur Eddington and Andrew Claude de la Cherois Crommelin
June 28 » The Treaty of Versailles is signed, ending the state of war between Germany and the Allies of World War I.
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/I34351.php : accessed February 2, 2026), "Hendrik Sonnenberg (1885-????)".
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