The temperature on May 30, 1757 was about 15.0 °C. There was 4 mm of rainWind direction mainly southwest. Weather type: regen geheel betrokken. Source: KNMI
May 6 » Battle of Prague: A Prussian army fights an Austrian army in Prague during the Seven Years' War.
May 6 » The end of Konbaung–Hanthawaddy War, and the end of Burmese Civil War (1740–1757).
June 18 » Battle of Kolín between Prussian forces under Frederick the Great and an Austrian army under the command of Field Marshal Count Leopold Joseph von Daun in the Seven Years' War.
June 23 » Battle of Plassey: Three thousand British troops under Robert Clive defeat a 50,000-strong Indian army under Siraj ud-Daulah at Plassey.
December 5 » Seven Years' War: Battle of Leuthen: Frederick II of Prussia leads Prussian forces to a decisive victory over Austrian forces under Prince Charles Alexander of Lorraine.
December 31 » Empress Elizabeth I of Russia issues her ukase incorporating Königsberg into Russia.
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/I2898.php : accessed January 22, 2026), "Derk Witteveen (-< 1758)".
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