Family tree Van Koert » Anna Maria Roelofs (1791-1873)

Day of marriage July 30, 1818

• The temperature on July 30, 1818 was about 22.0 °C. Wind direction mainly southwest. Weather type: betrokken regen. Source: KNMI
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  De Republiek der Verenigde Nederlanden werd in 1794-1795 door de Fransen veroverd onder leiding van bevelhebber Charles Pichegru (geholpen door de Nederlander Herman Willem Daendels); de verovering werd vergemakkelijkt door het dichtvriezen van de Waterlinie; Willem V moest op 18 januari 1795 uitwijken naar Engeland (en van daaruit in 1801 naar Duitsland); de patriotten namen de macht over van de aristocratische regenten en proclameerden de Bataafsche Republiek; op 16 mei 1795 werd het Haags Verdrag gesloten, waarmee ons land een vazalstaat werd van Frankrijk; in 3.1796 kwam er een Nationale Vergadering; in 1798 pleegde Daendels een staatsgreep, die de unitarissen aan de macht bracht; er kwam een nieuwe grondwet, die een Vertegenwoordigend Lichaam (met een Eerste en Tweede Kamer) instelde en als regering een Directoire; in 1799 sloeg Daendels bij Castricum een Brits-Russische invasie af; in 1801 kwam er een nieuwe grondwet; bij de Vrede van Amiens (1802) kreeg ons land van Engeland zijn koloniën terug (behalve Ceylon); na de grondwetswijziging van 1805 kwam er een raadpensionaris als eenhoofdig gezag, namelijk Rutger Jan Schimmelpenninck (van 31 oktober 1761 tot 25 maart 1825).
• In the year 1818: Source: Wikipedia
  • March 30 » Physicist Augustin Fresnel reads a memoir on optical rotation to the French Academy of Sciences, reporting that when polarized light is "depolarized" by a Fresnel rhomb, its properties are preserved in any subsequent passage through an optically-rotating crystal or liquid.
  • April 16 » The United States Senate ratifies the Rush–Bagot Treaty, limiting naval armaments on the Great Lakes and Lake Champlain.
  • April 19 » French physicist Augustin Fresnel signs his preliminary "Note on the Theory of Diffraction" (deposited on the following day). The document ends with what we now call the Fresnel integrals.
  • April 20 » The case of Ashford v Thornton ends, with Abraham Thornton allowed to go free rather than face a retrial for murder, after his demand for trial by battle is upheld.
  • July 29 » French physicist Augustin Fresnel submits his prizewinning "Memoir on the Diffraction of Light", precisely accounting for the limited extent to which light spreads into shadows, and thereby demolishing the oldest objection to the wave theory of light.
  • October 20 » The Convention of 1818 is signed between the United States and the United Kingdom, which settles the Canada–United States border on the 49th parallel for most of its length.

Day of death September 26, 1873

• The temperature on September 26, 1873 was about 18.7 °C. The air pressure was 1 kgf/m² and came mainly from the south east. The airpressure was 77 cm mercury. The atmospheric humidity was 61%. Source: KNMI
• Koning Willem III (Huis van Oranje-Nassau) was from 1849 till 1890 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• 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).
• In the year 1873: Source: Wikipedia
  • The Netherlands had about 4.0 million citizens.
  • January 17 » A group of Modoc warriors defeats the United States Army in the First Battle of the Stronghold, part of the Modoc War.
  • February 18 » Bulgarian revolutionary leader Vasil Levski is executed by hanging in Sofia by the Ottoman authorities.
  • June 5 » Sultan Barghash bin Said of Zanzibar closes the great slave market under the terms of a treaty with Great Britain.
  • July 1 » Prince Edward Island joins into Canadian Confederation.
  • July 21 » At Adair, Iowa, Jesse James and the James–Younger Gang pull off the first successful train robbery in the American Old West.
  • September 15 » Franco-Prussian War: The last Imperial German Army troops leave France upon completion of payment of indemnity.

Source: Wikipedia

• 1868 » August Ferdinand Möbius, German mathematician and astronomer (b. 1790)
• 1877 » Hermann Grassmann, German mathematician and physicist (b. 1809)
• 1902 » Levi Strauss, German-American businessman, founded Levi Strauss & Co. (b. 1829)
• 1904 » John Fitzwilliam Stairs, Canadian businessman and politician (b. 1848)
• 1904 » Lafcadio Hearn, Greek-Japanese author and academic (b. 1850)
• 1922 » Charles Wade, Australian politician, 17th Premier of New South Wales (b. 1863)