William Penn, English admiral and politician (d. 1670)
Sir William Penn (23 April 1621 – 16 September 1670) was an English admiral and politician who sat in the House of Commons from 1660 to 1670. He was the father of William Penn, founder of the Province of Pennsylvania (today, Commonwealth of Pennsylvania).

1621Apr, 23
William Penn (Royal Navy officer)
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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.