May 10 » Louis XVI and Marie Antoinette become King and Queen of France.
June 2 » Intolerable Acts: The Quartering Act is enacted, allowing a governor in colonial America to house British soldiers in uninhabited houses, outhouses, barns, or other buildings if suitable quarters are not provided.
June 13 » Rhode Island becomes the first of Britain's North American colonies to ban the importation of slaves.
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 5 » First Continental Congress assembles in Philadelphia.
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
February 9 » American Revolutionary War: The British Parliament declares Massachusetts in rebellion.
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.
April 19 » American Revolutionary War: The war begins with an American victory in Concord during the battles of Lexington and Concord.
July 27 » Founding of the U.S. Army Medical Department: The Second Continental Congress passes legislation establishing "an hospital for an army consisting of 20,000 men."
August 23 » American Revolutionary War: King George III delivers his Proclamation of Rebellion to the Court of St James's stating that the American colonies have proceeded to a state of open and avowed rebellion.
November 10 » The United States Marine Corps is founded at Tun Tavern in Philadelphia by Samuel Nicholas.
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 18, 2026), "Adrianus de Graaf (1774-1775)".
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