January 21 » Abdul Hamid I becomes Sultan of the Ottoman Empire and Caliph of Islam.
May 10 » Louis XVI and Marie Antoinette become King and Queen of France.
July 4 » Orangetown Resolutions are adopted in the Province of New York, one of many protests against the British Parliament's Coercive Acts.
July 21 » Russo-Turkish War (1768–74): Russia and the Ottoman Empire sign the Treaty of Küçük Kaynarca ending the war.
August 1 » British scientist Joseph Priestley discovers oxygen gas, corroborating the prior discovery of this element by German-Swedish chemist Carl Wilhelm Scheele.
September 4 » New Caledonia is first sighted by Europeans, during the second voyage of Captain James Cook.
Day of death April 21, 1775
The temperature on April 21, 1775 was about 7.0 °C. Wind direction mainly south east. Weather type: helder. Special wheather fenomena: ijs. Source: KNMI
March 8 » An anonymous writer, thought by some to be Thomas Paine, publishes "African Slavery in America", the first article in the American colonies calling for the emancipation of slaves and the abolition of slavery.
July 5 » The Second Continental Congress adopts the Olive Branch Petition.
July 8 » The Olive Branch Petition is signed by the Continental Congress of the Thirteen Colonies of North America.
September 11 » Benedict Arnold's expedition to Quebec leaves Cambridge, Massachusetts.
September 17 » American Revolutionary War: The Invasion of Canada begins with the Siege of Fort St. Jean.
December 31 » American Revolutionary War: Battle of Quebec: British forces repulse an attack by Continental Army General Richard Montgomery.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I45489.php : accessed January 10, 2026), "Adrianus de Graaf (1774-1775)".
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