WHAT HAPPENED ON 17. SEPTEMBER
Want to find out what all happened on 17. September

Remistus, Roman general (magister militum), is besieged with a Gothic force at Ravenna and later executed in the Palace in Classis, outside the city. (17. September 456)

Highest Galician nobility led by Pedro Fróilaz de Traba and the bishop Diego Gelmírez crown Alfonso VII as "King of Galicia". (17. September 1111)

The Battle of Myriokephalon is fought. (17. September 1176)

The Battle of Świecino (also known as the Battle of Żarnowiec) is fought during Thirteen Years' War. (17. September 1462)

The Peace of Bergerac is signed between Henry III of France and the Huguenots. (17. September 1577)

The city of Boston, Massachusetts is founded. (17. September 1630)

Sweden wins a major victory at the Battle of Breitenfeld against the Holy Roman Empire during the Thirty Years' War. (17. September 1631)

Antonie van Leeuwenhoek writes a letter to the Royal Society describing "animalcules": the first known description of protozoa. (17. September 1683)

Jean Thurel enlists in the Touraine Regiment at the age of 17, the first day of a military career that would span for over 90 years. (17. September 1716)

American Revolutionary War: The Invasion of Canada begins with the Siege of Fort St. Jean. (17. September 1775)

The Presidio of San Francisco is founded in New Spain. (17. September 1776)

The Treaty of Fort Pitt is signed. It is the first formal treaty between the United States and a Native American tribe (the Lenape or Delaware Indians). (17. September 1778)

The United States Constitution is signed in Philadelphia. (17. September 1787)

Peace between Sweden and Russia in the Finnish War. The territory to become Finland is ceded to Russia by the Treaty of Fredrikshamn. (17. September 1809)

Francis Scott Key finishes his poem "Defence of Fort McHenry", later to be the lyrics of "The Star-Spangled Banner". (17. September 1814)

American abolitionist Harriet Tubman escapes from slavery. (17. September 1849)

Joshua A. Norton declares himself "Emperor Norton I" of the United States. (17. September 1859)

American Civil War: George B. McClellan halts the northward drive of Robert E. Lee's Confederate army in the single-day Battle of Antietam, the bloodiest day in American military history. (17. September 1862)

American Civil War: The Allegheny Arsenal explosion results in the single largest civilian disaster during the war. (17. September 1862)

Battle of Yalu River, the largest naval engagement of the First Sino-Japanese War. (17. September 1894)