February 29 » King Alaungpaya founds Konbaung Dynasty, the last dynasty of Burmese monarchy.
April 20 » Start of Konbaung–Hanthawaddy War, a new phase in the Burmese Civil War (1740–57).
June 15 » Benjamin Franklin proves that lightning is electricity (traditional date, the exact date is unknown).
September 2 » Great Britain, along with its overseas possessions, adopts the Gregorian calendar.
September 14 » The British Empire adopts the Gregorian calendar, skipping eleven days (the previous day was September 2).
Day of marriage May 17, 1779
The temperature on May 17, 1779 was about 16.0 °C. There was 22 mm of rainWind direction mainly west-southwest. Weather type: betrokken regen. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Frank Maes, "Family tree Maes", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-maes/I710.php : accessed December 24, 2025), "Franciscus Laurentius Haesendonckx (1752-????)".
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