January 21 » Sweden and Prussia sign the Treaty of Stockholm.
February 29 » Ulrika Eleonora, Queen of Sweden abdicates in favour of her husband, who becomes King Frederick I on March 24.
March 24 » Count Frederick of Hesse-Kassel is elected King of Sweden by the Riksdag of the Estates, after his consort Ulrika Eleonora abdicated the throne on 29 February
August 14 » The Spanish military Villasur expedition is wiped out by Pawnee and Otoe warriors near present-day Columbus, Nebraska.
October 20 » Caribbean pirate Calico Jack is captured by the Royal Navy.
November 9 » The synagogue of Judah HeHasid is burned down by Arab creditors, leading to the expulsion of the Ashkenazim from Jerusalem.
Day of death August 21, 1728
The temperature on August 21, 1728 was about 10.0 °C. There was 22 mm of rainWind direction mainly southwest. Weather type: betrokken. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I1794.php : accessed February 2, 2026), "Cornelis Jans Hydra (Hijdra, Heijdra) (-1728)".
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