February 28 » Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
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.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
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.
Day of marriage October 4, 1928
The temperature on October 4, 1928 was between 3.6 °C and 14.8 °C and averaged 8.7 °C. There was 9.5 hours of sunshine (83%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
June 8 » Second Northern Expedition: The National Revolutionary Army captures Peking, whose name is changed to Beijing ("Northern Capital").
June 18 » Aviator Amelia Earhart becomes the first woman to fly in an aircraft across the Atlantic Ocean (she is a passenger; Wilmer Stultz is the pilot and Lou Gordon the mechanic).
September 18 » Juan de la Cierva makes the first autogyro crossing of the English Channel.
September 28 » Alexander Fleming notices a bacteria-killing mold growing in his laboratory, discovering what later became known as penicillin.
October 10 » Chiang Kai-shek becomes Chairman of the Republic of China.
November 18 » Release of the animated short Steamboat Willie, the first fully synchronized sound cartoon, directed by Walt Disney and Ub Iwerks, featuring the third appearances of cartoon characters Mickey Mouse and Minnie Mouse. This is considered by the Disney corporation to be Mickey's birthday.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I25111.php : accessed February 23, 2026), "Jan Maas (1897-????)".
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