 | 1969 Armstrong first person on moon 1986 Nuclear disaster at Chernobyl 1989 Berlin wall falls 1991 Persian Gulf War 1991 Break-up of the Soviet Union | 1922 USSR formed by Soviet states 1939 - 1945 World War II 1945 Atomic bomb detonated (Hiroshima) 1950 Korean War begins 1964 - 1973 Vietnam War | 1895 Marconi invents wireless telegraphy 1899 Boer War begins 1903 Wright brothers 1st plane flight 1912 Titanic sinks on maiden voyage 1914 - 1918 World War I |
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| | |  |  | Anthonius Frederik de Gier b.1887 Harmelen, Netherlands d.1983 Utrecht, Netherlands |  | ||
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| | | Johannes de Gier b.1926 Vleuten, Netherlands d.2018 | | Jacoba Oomse b.1891 Maartensdijk, Netherlands d.1963 Alkemade-Oude Weterin | | ||
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|  | Rudolf de Gier b. Living d. | | | Cornelis Johannes Wuister b.1912 Schiedam, Netherlands d.1975 Schiedam, Netherlands | |||
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| Samantha Marica de Gier b. Living d. |  |  | Maria Wuister b. Living d. | | Berendina van de Wal b.1919 Oosterwijk-, Netherlands d. | ||
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| Jennifer de Gier b. Living d. | | | |||||
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|  | Ilonka Lucas b. Living d. | ||||||
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