April 1721 in History

Apr 3 Robert Walpole becomes Britain's 1st Lord of the Treasury - effective Prime Minister, although that term was never officially used (indeed, it was considered an insult) until much later

Apr 19 Roger Sherman, American lawyer and Founding Father of the United States (Declaration of Independence, Constitution), born in Newton, Massachusetts (d. 1793)

Apr 28 Mary Read, English pirate who operated in the Caribbean, dies of a violent fever while in prison and likely still pregnant aged 36