May 24 » The Ashmolean Museum in Oxford, England, opens as the world's first university museum.
June 23 » William Penn signs a friendship treaty with Lenni Lenape Indians in Pennsylvania.
July 16 » Manchu Qing dynasty naval forces under traitorous commander Shi Lang defeat the Kingdom of Tungning in the Battle of Penghu near the Pescadores Islands.
September 12 » Austro-Ottoman War: Battle of Vienna: Several European armies join forces to defeat the Ottoman Empire.
September 17 » Antonie van Leeuwenhoek writes a letter to the Royal Society describing "animalcules".
October 6 » Immigrant families found Germantown, Pennsylvania in the first major immigration of German people to America.
March 11 » Queen Anne withholds Royal Assent from the Scottish Militia Bill, the last time a British monarch vetoes legislation.
March 23 » James Francis Edward Stuart lands at the Firth of Forth as part of the planned French invasion of Britain.
September 11 » Charles XII of Sweden stops his march to conquer Moscow outside Smolensk, marking the turning point in the Great Northern War. The army is defeated nine months later in the Battle of Poltava, and the Swedish Empire ceases to be a major power.
October 9 » Peter the Great defeats the Swedes at the Battle of Lesnaya.
Day of death April 25, 1777
The temperature on April 25, 1777 was about 7.0 °C. There was 4 mm of rainWind direction mainly west. Weather type: betrokken regen. Special wheather fenomena: noorderlicht. Source: KNMI
June 13 » American Revolutionary War: Gilbert du Motier, Marquis de Lafayette lands near Charleston, South Carolina, in order to help the Continental Congress to train its army.
June 14 » The Second Continental Congress passes the Flag Act of 1777 adopting the Stars and Stripes as the Flag of the United States.
July 6 » American Revolutionary War: Siege of Fort Ticonderoga: After a bombardment by British artillery under General John Burgoyne, American forces retreat from Fort Ticonderoga, New York.
September 19 » American Revolutionary War: British forces win a tactically expensive victory over the Continental Army in the First Battle of Saratoga.
October 7 » American Revolutionary War: The Americans defeat the British in the Second Battle of Saratoga, also known as the Battle of Bemis Heights.
November 15 » American Revolutionary War: After 16 months of debate the Continental Congress approves the Articles of Confederation.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Pedigree of Gerrit Eersen", database, Genealogy Online (https://www.genealogieonline.nl/gerrit-eersen/I15938.php : accessed October 14, 2026), "Hendrik Hendriksen Cortus (1683-1777)".
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