Births on October 28

Jacob Kettler

Born on October 28, 1610

Jacob Kettler, German noble (d. 1682)

Jacob Kettler (German: Jakob von Kettler) (28 October 1610 – 1 January 1682) was a Baltic German Duke of the Duchy of Courland and Semigallia (1642–1682). Under his rule, the duchy reached its peak in wealth and engaged in colonization.

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Jacob Kettler

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Events on 1610

7 Jan

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.
2 Aug

Northwest Passage
During Henry Hudson's search for the Northwest Passage, he sails into what is now known as Hudson Bay.