January 11 » William Herschel discovers Titania and Oberon, two moons of Uranus.
May 25 » After a delay of 11 days, the United States Constitutional Convention formally convenes in Philadelphia after a quorum of seven states is secured.
June 20 » Oliver Ellsworth moves at the Federal Convention to call the government the 'United States'.
September 28 » The Congress of the Confederation votes to send the newly-written United States Constitution to the state legislatures for approval.
October 29 » Mozart's opera Don Giovanni receives its first performance in Prague.
December 7 » Delaware becomes the first state to ratify the United States Constitution.
When copying data from this family tree, please include a reference to the origin: Jaap van der Werff, "Family tree Van der Werff / Kooistra", database, Genealogy Online (https://www.genealogieonline.nl/van-der-werff-stamboom/I500091.php : accessed May 30, 2024), "Willebrordus Borrias (Bovias) (1733-1787)".
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