Catherine Vasa, Swedish princess (b. 1539)
Catherine Vasa of Sweden (Swedish: Katarina Gustavsdotter Vasa; 6 June 1539 – 21 December 1610) was a Swedish princess, and the Countess consort of East Frisia as the spouse of Edzard II, Count of East Frisia. She was the oldest daughter of Gustav Vasa and Margareta Leijonhufvud. She was the autonomous Regent of Berum and Norden in Ostfriesland (East Frisia) from 1599 to 1610.

1610Dec, 21
Catherine Vasa
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Events on 1610
- 7Jan
Galilean moons
Galileo Galilei makes his first observation of the four Galilean moons: Ganymede, Callisto, Io and Europa, although he is not able to distinguish the last two until the following day. - 2Aug
Northwest Passage
During Henry Hudson's search for the Northwest Passage, he sails into what is now known as Hudson Bay. - 9Aug
Colony of Virginia
The First Anglo-Powhatan War begins in colonial Virginia.