The temperature on April 21, 1873 was about 13.6 °C. The air pressure was 6 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 39%. Source: KNMI
From July 6, 1872 till August 27, 1874 the Netherlands had a cabinet De Vries - Fransen van de Putte with the prime ministers Mr. G. de Vries Azn. (liberaal) and I.D. Fransen van de Putte (liberaal).
May 20 » Levi Strauss and Jacob Davis receive a U.S. patent for blue jeans with copper rivets.
May 23 » The Canadian Parliament establishes the North-West Mounted Police, the forerunner of the Royal Canadian Mounted Police.
August 4 » American Indian Wars: While protecting a railroad survey party in Montana, the United States 7th Cavalry, under Lieutenant Colonel George Armstrong Custer clashes for the first time with the Cheyenne and Lakota people near the Tongue River; only one man on each side is killed.
August 23 » Albert Bridge in Chelsea, London opens.
August 30 » Austrian explorers Julius von Payer and Karl Weyprecht discover the archipelago of Franz Josef Land in the Arctic Sea.
Day of marriage April 26, 1898
The temperature on April 26, 1898 was about 14.1 °C. The airpressure was 75 cm mercury. The atmospheric humidity was 66%. Source: KNMI
January 13 » Émile Zola's J'accuse…! exposes the Dreyfus affair.
May 1 » Spanish–American War: Battle of Manila Bay: The Asiatic Squadron of the United States Navy destroys the Pacific Squadron of the Spanish Navy after a seven-hour battle. Spain loses all seven of its ships, and 381 Spanish sailors die. There are no American vessel losses or combat deaths.
June 11 » The Hundred Days' Reform, a planned movement to reform social, political, and educational institutions in China, is started by the Guangxu Emperor, but is suspended by Empress Dowager Cixi after 104 days. (The failed reform led to the abolition of the Imperial examination in 1905.)
June 13 » Yukon Territory is formed, with Dawson chosen as its capital.
August 13 » Carl Gustav Witt discovers 433 Eros, the first near-Earth asteroid to be found.
November 10 » Beginning of the Wilmington insurrection of 1898, the only instance of a municipal government being overthrown in United States history.
When copying data from this family tree, please include a reference to the origin: A.R. Servaes, "Family tree Servaes, Maastricht/Venlo/Straelen/Neuss/Düsseldorf", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-servaes/I1804.php : accessed January 29, 2026), "Heinrich Greven (1873-????)".
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