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.
September 11 » Battle of Vienna: Coalition forces, including the famous winged Hussars, led by Polish King John III Sobieski lift the siege laid by Ottoman forces.
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 3 » Qing dynasty naval commander Shi Lang receives the surrender of the Tungning kingdom on Taiwan after the Battle of Penghu.
Day of death May 25, 1778
The temperature on May 25, 1778 was about 14.0 °C. Wind direction mainly east-southeast. Weather type: zeer betrokken. Source: KNMI
January 18 » James Cook is the first known European to discover the Hawaiian Islands, which he names the "Sandwich Islands".
February 6 » American Revolutionary War: In Paris the Treaty of Alliance and the Treaty of Amity and Commerce are signed by the United States and France signaling official recognition of the new republic.
February 23 » American Revolutionary War: Baron von Steuben arrives at Valley Forge, Pennsylvania to help to train the Continental Army.
May 1 » American Revolution: The Battle of Crooked Billet begins in Hatboro, Pennsylvania.
July 10 » American Revolution: Louis XVI of France declares war on the Kingdom of Great Britain.
August 26 » The first recorded ascent of Triglav, the highest mountain in Slovenia.
When copying data from this family tree, please include a reference to the origin: Peter John Oswald, "Pop Oswald Tree", database, Genealogy Online (https://www.genealogieonline.nl/pop-oswald-tree/P8649.php : accessed December 6, 2025), "Nicholas CLEMENT (1683-1778)".
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