February 9 » William G. Morgan creates a game called Mintonette, which soon comes to be referred to as volleyball.
April 3 » The trial in the libel case brought by Oscar Wilde begins, eventually resulting in his imprisonment on charges of homosexuality.
April 17 » The Treaty of Shimonoseki between China and Japan is signed. This marks the end of the First Sino-Japanese War, and the defeated Qing Empire is forced to renounce its claims on Korea and to concede the southern portion of the Fengtien province, Taiwan and the Pescadores Islands to Japan.
June 11 » Paris–Bordeaux–Paris, sometimes called the first automobile race in history or the "first motor race", takes place.
November 5 » George B. Selden is granted the first U.S. patent for an automobile.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
Day of death September 15, 1973
The temperature on September 15, 1973 was between 8.2 °C and 25.0 °C and averaged 16.7 °C. There was 10.7 hours of sunshine (84%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
June 9 » In horse racing, Secretariat wins the U.S. Triple Crown.
October 16 » Henry Kissinger and Lê Đức Thọ are awarded the Nobel Peace Prize.
October 21 » Fred Dryer of the Los Angeles Rams becomes the first player in NFL history to score two safeties in the same game.
October 25 » Egypt and Israel accept United Nations Security Council Resolution 339.
November 3 » Mariner program: NASA launches the Mariner 10 toward Mercury. On March 29, 1974, it becomes the first space probe to reach that planet.
December 15 » John Paul Getty III, grandson of American billionaire J. Paul Getty, is found alive near Naples, Italy, after being kidnapped by an Italian gang on July 10.
When copying data from this family tree, please include a reference to the origin: Ellen Stempher-Hellwig, "Family tree Hellwig", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-hellwig/R144.php : accessed September 26, 2026), "Mai - Maria Barbara /Helwig (Mai - Maria Barbara) Hellewig (1895-1973)".
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