 | 1854 Crimean War with Russia 1869 Opening of Suez Canal 1871 Franco - Prussian War 1895 Marconi invents wireless telegraphy 1899 Boer War begins | 1804 Napoleon becomes French Emperor 1805 Battle of Trafalgar, Nelson killed 1815 Battle of Waterloo, Napoleon defeat 1830 French Revolution 1837 Queen Victoria assumes throne | 1770 Cook discovers New South Wales 1776 America declares independence 1789 Geo. Washington 1st USA president 1789 French Revolution begins 1798 Irish revolt against English rule |
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 | Gerrit de Gier b.1877 Harmelen, Netherlands d.1950 |  | |  |  | Jan Flore de Gier b.1776 Jaarsveld, Netherlands d.1856 Jaarsveld, Netherlands |  | |
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| Antje de Gier b.1878 Harmelen, Netherlands d.1878 Harmelen, Netherlands |  | | Johannes de Gier b.1809 Jaarsveld, Netherlands d.1868 Harmelen, Netherlands | | Maria Roelofs Kraayesteyn b.1773 Jaarsveld, Netherlands d.1852 Jaarsveld, Netherlands | | |
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| Antje de Gier b.1879 Harmelen, Netherlands d.1886 Harmelen, Netherlands |  | Johannes de Gier b.1846 Harmelen, Netherlands d.1906 Harmelen, Netherlands | | | Cornelis van Dijk b.1770 Lopik, Netherlands d.1801 IJsselstein, Netherlands | | |
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| Janna de Gier b.1880 Harmelen, Netherlands d.1963 | |  | Janna van Dijk b.1808 Lopik, Netherlands d.1890 Harmelen, Netherlands | | Aletta Bosch b.1784 IJsselstein, Netherlands d.1817 Lopik, Netherlands | | |
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| Margarethus de Gier b.1881 Harmelen, Netherlands d.1968 | | | | | Dirk van Beusekom b.1772 d.1844 Jutphaas, Netherlands | | |
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| Teunis de Gier b.1882 Harmelen, Netherlands d.1966 | | | Gerrit van Beusekom b.1821 Jutphaas, Netherlands d.1894 IJsselstein, Netherlands | | Annigje Griffioen b.1783 d.1845 Jutphaas, Netherlands | | |
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| Egbertus de Gier b.1884 Harmelen, Netherlands d.1957 Breukelen, Netherlands | | Margaretha van Beusekom b.1853 Willeskop, Netherlands d.1927 Haastrecht, Netherlands | | | Anthonie Fredrik Kool b.1790 Zijderveld, Netherlands d. | | |
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| Cornelis de Gier b.1885 Harmelen, Netherlands d.1961 | | | Margaretha Kool b.1821 Hagestein, Netherlands d.1859 Willeskop, Netherlands | | Elizabeth Ruijter b.1789 Cuijlenborg, Netherlands d. | | |
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| Dirk Jan de Gier b.1885 Harmelen, Netherlands d.1950 Hilversum, Netherlands | |  | |||||
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 | Anthonius Frederik de Gier b.1887 Harmelen, Netherlands d.1983 Utrecht, Netherlands | | ||||||
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| Antje de Gier b.1888 Harmelen, Netherlands d.1980 | | ||||||
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| Maria de Gier b.1892 Harmelen, Netherlands d.1954 Harmelen, Netherlands |  | ||||||