On This Day

Year in History

Explore the major historical events, famous births, and notable deaths that occurred in the year 1721. This year saw 11 significant events. 2 notable figures were born.

18th Century1720s

1721 Timeline

  1. Johann Sebastian Bach dedicates his Brandenburg Concertos to Christian Ludwig, Margrave of Brandenburg-Schwedt

    Johann Sebastian Bach dedicates his Brandenburg Concertos to Christian Ludwig, Margrave of Brandenburg-Schwedt

  2. Tsar Peter the Great titles himself "Emperor of All Russia"

    The emperor and autocrat of all Russia was the official title of the Russian monarch from 1721 to 1917. The title originated in connection with Russia's victory in the Great Northern War (1700–1721)...

  3. British Chancellor Exchequer John Aislabie confined in London Tower

    British Chancellor Exchequer John Aislabie confined in London Tower

  4. France and Spain sign the Treaty of Madrid

    The War of the Spanish Succession was a European great power conflict, fought between 1701 and 1714.

  5. HMS Seahorse, infected with smallpox, arrives in Boston Harbor, causing the first outbreak in two decades; half of the p

    HMS Seahorse, infected with smallpox, arrives in Boston Harbor, causing the first outbreak in two decades; half of the population contracts it, resulting in 850 deaths [1]

  6. Michelangiolo dei Conti succeeds Pope Clement XI, as Innocent XIII

    Michelangiolo dei Conti succeeds Pope Clement XI, as Innocent XIII

  7. John Copson becomes America's 1st insurance agent

    John Copson becomes America's 1st insurance agent

  8. South Carolina formally incorporated as a royal colony

    South Carolina formally incorporated as a royal colony

  9. England signs Treaty of Madrid

    England signs Treaty of Madrid

  10. Dr Zabdiel Boylston gives 1st smallpox inoculations in America

    Dr Zabdiel Boylston gives 1st smallpox inoculations in America

  11. Russian and Swedish sign Treaty of Nystad, ending North Sea War

    The Russian Empire spanned most of northern Eurasia from its establishment in November 1721 until the proclamation of the Russian Republic in September 1917.

  12. Roger Sherman is born

    Roger Sherman, American lawyer, statesman, and founding father, known for american lawyer, statesman, and founding father, was born on 1721-04-19.

  13. Peyton Randolph is born

    Peyton Randolph, American founding father of the united states, known for founding father of the united states, was born on 1721-09-10.

Events

Johann Sebastian Bach dedicates his Brandenburg Concertos to Christian Ludwig, Margrave of Brandenburg-Schwedt

Johann Sebastian Bach dedicates his Brandenburg Concertos to Christian Ludwig, Margrave of Brandenburg-Schwedt

Tsar Peter the Great titles himself "Emperor of All Russia"

The emperor and autocrat of all Russia was the official title of the Russian monarch from 1721 to 1917. The title originated in connection with Russia's victory in the Great Northern War (1700–1721)...

British Chancellor Exchequer John Aislabie confined in London Tower

British Chancellor Exchequer John Aislabie confined in London Tower

France and Spain sign the Treaty of Madrid

The War of the Spanish Succession was a European great power conflict, fought between 1701 and 1714.

HMS Seahorse, infected with smallpox, arrives in Boston Harbor, causing the first outbreak in two decades; half of the p

HMS Seahorse, infected with smallpox, arrives in Boston Harbor, causing the first outbreak in two decades; half of the population contracts it, resulting in 850 deaths [1]

Michelangiolo dei Conti succeeds Pope Clement XI, as Innocent XIII

Michelangiolo dei Conti succeeds Pope Clement XI, as Innocent XIII

John Copson becomes America's 1st insurance agent

John Copson becomes America's 1st insurance agent

South Carolina formally incorporated as a royal colony

South Carolina formally incorporated as a royal colony

England signs Treaty of Madrid

England signs Treaty of Madrid

Dr Zabdiel Boylston gives 1st smallpox inoculations in America

Dr Zabdiel Boylston gives 1st smallpox inoculations in America

Russian and Swedish sign Treaty of Nystad, ending North Sea War

The Russian Empire spanned most of northern Eurasia from its establishment in November 1721 until the proclamation of the Russian Republic in September 1917.

Famous Births

Frequently Asked Questions

What happened in 1721?
In 1721, there were 11 significant historical events. Notable events include Johann Sebastian Bach dedicates his Brandenburg Concertos to Christian Ludwig, Margrave of Brandenburg-Schwedt, Tsar Peter the Great titles himself "Emperor of All Russia", British Chancellor Exchequer John Aislabie confined in London Tower.
Who was born in 1721?
2 notable figures were born in 1721, including Roger Sherman is born, Peyton Randolph is born.

People in 1721

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