Thomas Willis, English physician and anatomist (d. 1675)
Thomas Willis FRS (27 January 1621 – 11 November 1675) was an English doctor who played an important part in the history of anatomy, neurology and psychiatry. He was a founding member of the Royal Society.

1621Jan, 27
Thomas Willis
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Events on 1621
- 17Feb
Plymouth Colony
Myles Standish is appointed as first military commander of the English Plymouth Colony in North America. - 16Mar
Plymouth Colony
Samoset, a Mohegan, visited the settlers of Plymouth Colony and greets them, "Welcome, Englishmen! My name is Samoset." - 22Mar
Wampanoag people
The Pilgrims of Plymouth Colony sign a peace treaty with Massasoit of the Wampanoags. - 21Jun
Battle of White Mountain
Execution of 27 Czech noblemen on the Old Town Square in Prague as a consequence of the Battle of White Mountain.