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 October 30, 1779
The temperature on October 30, 1779 was about 13.0 °C. There was 48 mm of rainWind direction mainly west-northwest. Weather type: regen geheel betrokken. Source: KNMI
February 14 » American Revolutionary War: The Battle of Kettle Creek is fought in Georgia.
March 3 » American Revolutionary War: The Continental Army is routed at the Battle of Brier Creek near Savannah, Georgia.
May 13 » War of the Bavarian Succession: Russian and French mediators at the Congress of Teschen negotiate an end to the war. In the agreement Austria receives the part of its territory that was taken from it (the Innviertel).
June 24 » American Revolutionary War: The Great Siege of Gibraltar begins.
August 13 » American Revolutionary War: The Royal Navy defeats the Penobscot Expedition with the most significant loss of United States naval forces prior to the attack on Pearl Harbor.
September 28 » American Revolution: Samuel Huntington is elected President of the Continental Congress, succeeding John Jay.
Day of death April 21, 1790
The temperature on April 21, 1790 was about 8.0 °C. Wind direction mainly east-northeast. Weather type: omtrent helder. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Marjo van Leeuwen, "Family tree Van Leeuwen-Van der Speck en vele anderen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-leeuwen-van-der-speck/R7533.php : accessed May 6, 2025), "Jan van der Spek (1752-1790)".
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