March 18 » New York governor George Clarke's complex at Fort George is burned in an arson attack, starting the New York Conspiracy of 1741.
May 20 » The Battle of Cartagena de Indias ends in a Spanish victory and the British begin withdrawal towards Jamaica with substantial losses.
June 25 » Maria Theresa is crowned Queen of Hungary.
July 15 » Aleksei Chirikov sights land in Southeast Alaska. He sends men ashore in a longboat, making them the first Europeans to visit Alaska.
July 31 » Charles Albert of Bavaria invades Upper Austria and Bohemia.
August 10 » King Marthanda Varma of Travancore defeats the Dutch East India Company at the Battle of Colachel, effectively bringing about the end of the Dutch colonial rule in India.
Day of death March 7, 1781
The temperature on March 7, 1781 was about 12.0 °C. Wind direction mainly north west from. Weather type: geheel betrokken. Source: KNMI
January 5 » American Revolutionary War: Richmond, Virginia, is burned by British naval forces led by Benedict Arnold.
February 3 » American Revolutionary War: British forces seize the Dutch-owned Caribbean island Sint Eustatius.
March 15 » American Revolutionary War: Battle of Guilford Court House: Near present-day Greensboro, North Carolina, 1,900 British troops under General Charles Cornwallis defeat a mixed American force numbering 4,400 in a Pyrrhic victory.
September 5 » Battle of the Chesapeake in the American Revolutionary War: The British Navy is repelled by the French Navy, contributing to the British surrender at Yorktown.
September 6 » The Battle of Groton Heights takes place, resulting in a British victory.
November 29 » The crew of the British slave ship Zong murders 133 Africans by dumping them into the sea to claim insurance.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P2069.php : accessed January 4, 2026), "Mary Low Chadwick Porter (1721-1781)".
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