Maria I of Portugal (b. 1717) June 17 – Adam Drummond, British politician (b. 1713) June 19 – Nathanael Greene, major general in the Continental Army, 3rd Quartermaster General (b. 1742) July 28 – Carlo Marchionni, Italian architect (b. 1702) August 17 – King Frederick II of Prussia ("Frederick the Great") (b. 1712) August 27 – Carl Fredrik Scheffer, Swedish politician (b. 1715) September 5 – Jonas Hanway, English merchant, traveler, and philanthropist (b. 1712) September 17 – Tokugawa Ieharu, Japanese shōgun (b. 1737) September 18 – Giovanni Battista Guadagnini, Italian luthier (b. 1711) October 2 – Augustus Keppel, 1st Viscount Keppel, British admiral (b. 1725) October 5 – Johann Gottlieb Gleditsch, German botanist (b. 1714) October 17 – Johann Ludwig Aberli, Swiss artist (b. 1723) October 20 – Humphrey Sturt, British architect (b. 1725) October 31 – Princess Amelia of Great Britain, Second daughter of George II of Great Britain (b. 1711) November 30 – Bernardo de Gálvez, Spanish military leader who aided the United States in its quest for independence, in the American Revolutionary War (b. 1746) December 26 – Gasparo Gozzi, Italian critic, dramatist (b. 1713) References Further reading