January 26 » For the first time, the Ottoman Empire permanently cedes territory to the Christian powers.
February 16 » First Leopoldine Diploma is issued by the Holy Roman Emperor, recognizing the Greek Catholic clergy enjoyed the same privileges as Roman Catholic priests in the Principality of Transylvania.
March 30 » Guru Gobind Singh establishes the Khalsa in Anandpur Sahib, Punjab.
April 14 » Khalsa: The Sikh religion was formalised as the Khalsa - the brotherhood of Warrior-Saints - by Guru Gobind Singh in northern India, in accordance with the Nanakshahi calendar.
Day of marriage June 20, 1717
The temperature on June 20, 1717 was about 23.0 °C. Source: KNMI
March 31 » A sermon on "The Nature of the Kingdom of Christ" by Benjamin Hoadly, the Bishop of Bangor, preached in the presence of King George I of Great Britain, provokes the Bangorian Controversy.
June 24 » The Premier Grand Lodge of England is founded in London, the first Masonic Grand Lodge in the world (now the United Grand Lodge of England).
July 17 » King George I of Great Britain sails down the River Thames with a barge of 50 musicians, where George Frideric Handel's Water Music is premiered.
August 17 » Austro-Turkish War of 1716–18: The month-long Siege of Belgrade ends with Prince Eugene of Savoy's Austrian troops capturing the city from the Ottoman Empire.
August 22 » Spanish troops land on Sardinia.
September 29 » An earthquake strikes Antigua Guatemala, destroying much of the city's architecture.
Day of death April 1, 1770
The temperature on April 1, 1770 was about 7.0 °C. Wind direction mainly west by south. Weather type: omtrent helder. Special wheather fenomena: droog. Source: KNMI
March 5 » Boston Massacre: Five Americans, including Crispus Attucks, are fatally shot by British troops in an event that would contribute to the outbreak of the American Revolutionary War (also known as the American War of Independence) five years later.
April 19 » Captain James Cook, still holding the rank of lieutenant, sights the eastern coast of what is now Australia.
May 16 » The 14-year-old Marie Antoinette marries 15-year-old Louis-Auguste, who later becomes king of France.
May 26 » The Orlov Revolt, an attempt to revolt against the Ottoman Empire before the Greek War of Independence, ends in disaster for the Greeks.
July 1 » Lexell's Comet is seen closer to the Earth than any other comet in recorded history, approaching to a distance of 0.0146 astronomical units (2,180,000km; 1,360,000mi).
August 22 » James Cook names and lands on Possession Island, and claims the east coast of Australia for Britain as New South Wales.
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/P18719.php : accessed January 29, 2026), "Sarah Leffingwell (1699-1770)".
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