Births on January 1

Christian Thomasius, German jurist and philosopher (d. 1728)

Christian Thomasius (1 January 1655 – 23 September 1728) was a German jurist and philosopher.

8 Mar

Thirteen Colonies
John Casor becomes the first legally-recognized slave in England's North American colonies where a crime was not committed.
25 Mar

Titan (moon)
Saturn's largest moon, Titan, is discovered by Christiaan Huygens.
31 Jul

Grand Duchy of Lithuania
Russo-Polish War (1654-67): The Russian army enters the capital of the Grand Duchy of Lithuania, Vilnius, which it holds for six years.
8 Sep

Charles X Gustav of Sweden
Warsaw falls without resistance to a small force under the command of Charles X Gustav of Sweden during The Deluge, making it the first time the city is captured by a foreign army.
18 Dec

Edict of Expulsion
The Whitehall Conference ends with the determination that there was no law preventing Jews from re-entering England after the Edict of Expulsion of 1290.