1650

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Events

January–March

January 7 – Louis I, Prince of Anhalt-Köthen, dies after a reign of more than 63 years. The area is now part of the northeastern German state of Saxony-Anhalt.
January 18 – Cardinal Jules Mazarin, the Chief Minister of France and head of its government since 1642, learns of a plot against him and has the Prince de Condé, the Prince de Conti and the Duc de Longueville arrested, prompting a rebellion by parliament against the Crown.
January 28 – The Sultan bin Saif of Oman expels the Portuguese colonial government from Muscat, forcing the surrender of the port of Muttrah and of Fort Capitan, and captures two warships, ending 35 years of Portuguese occupation.
February 1 – The French verse play Andromède, commissioned by Cardinal Mazarin, written by Pierre Corneille and with elaborate sets designed by Giacomo Torelli, premieres before the royal family at the Théâtre Royal de Bourbon.
February 13 – Oliver Cromwell's troops sweep through Ireland and bombard the Kiltinan Castle in County Tipperary.
February 26 – Jacob van Kittensteyn succeeds Joan Maetsuycker as the Dutch Governor of Zeylan (now the nation of Sri Lanka).
March 10 – João Rodrigues de Vasconcelos, Portuguese Count of Castelo Melhor, becomes the new Governor of Brazil.
March 28 – The Siege of Kilkenny in Ireland by Oliver Cromwell ends in after six days as royalist Sir Walter Butler turns over control of the city to the Commonwealth of England forces.

April–June

April 27 – The Battle of Carbisdale begins when a Royalist army invades mainland Scotland from the Orkney Islands. The Royalists are defeated by a Covenanter army.<ref>Template:Historic Environment Scotland</ref>
May 17 – A quarter of the New Model Army at the Siege of Clonmel in Ireland is trapped and killed.
June 9 – The Harvard Corporation, the more powerful of the two administrative boards of Harvard, is established (the first legal corporation in the Americas).
June 23 – Claimant King Charles II of England, Scotland and Ireland arrives in Scotland (at Garmouth), the only one of the three kingdoms that has accepted him as ruler.

July–September

July 13 – Italian priest and astronomer Gerolamo Sersale of Naples takes advantage of a full moon and draws an extremely detailed lunar map, which is then engraved and reproduced for other astronomers.
July 22 – Having completed his invasion of Ireland, England's General Oliver Cromwell begins the war against the Kingdom of Scotland, crossing from Northumberland at Berwick-upon-Tweed into Berwickshire, and leads troops toward Edinburgh.
July 29 – William II, Prince of Orange, stadtholder of Holland, attempts to conquer the rest of the Netherlands and attempts a coup d'état against the Dutch Republic.
August 13 – Colonel George Monck forms Monck's Regiment of Foot, forerunner of the Coldstream Guards.
September 3 – Third English Civil War: Battle of Dunbar (1650) – Parliamentarian forces under Oliver Cromwell defeat a Scottish army, commanded by David Leslie.<ref>Template:Historic Environment Scotland</ref>
September 19 – Treaty of Hartford: the English Commonwealth's Connecticut Colony and the Dutch Republic's colony of New Netherland establish their frontiers in North America.<ref name="Cassell's Chronology">Template:Cite book</ref>
September 27 – The Kolumbo volcano on Santorini experiences a massive eruption (VEI 6).
September 29 – Henry Robinson opens his Office of Addresses and Encounters, a form of employment exchange, in Threadneedle Street, London.

October–December

October 17 – The Western Remonstrance is signed by members of the Parliament of Scotland who condemn the recognition of Charles II being crowned King of Scotland, and pledging allegiance to England's General Oliver Cromwell.
October 20 – Queen Christina of Sweden, who has been the legal ruler of Sweden for almost 18 years, has an elaborate coronation ceremony at the castle of Jacobsdal near Stockholm. The coronation had originally been planned for her 18th birthday in 1644 but was delayed by a war with Denmark-Norway.
October 30 – The Commonwealth of England government passes a law prohibiting trade between English merchants and English colonies that had sided with Charles II over Oliver Cromwell. Specifically labeled as rebel colonies for purposes of the ban are the North American colonies of Virginia and the Somers Isles (alias Bermuda), as well as the Caribbean islands of Barbados and Antigua.
November 4 – William III of Orange becomes Prince of the House of Orange at the moment of his birth, succeeding his father, who had died a few days earlier. He does not become stadtholder, so the United Provinces becomes a true republic.
December 14 – Anne Greene is hanged at Oxford Castle in England for infanticide, having concealed an illegitimate stillbirth. The following day she revives in the dissection room and, being pardoned, lives until 1659.<ref>Template:Cite book Includes Latin verses by Christopher Wren.</ref><ref>Template:Cite journal</ref><ref name="DNB">Template:Cite ODNB</ref>
December 25 – Thomas Cooper, former Usher of Gresham's School, England, is hanged as a Royalist rebel.

Date unknown

The first modern Palio di Siena horserace is held in Italy.
Puritans chop down the original Glastonbury Thorn in England.
English highwayman and Captain James Hind campaigns for the Royalist cause (according to his own account).
Jews are allowed to return to France.
Three-wheeled wheelchairs are invented in Nuremberg by watchmaker Stephan Farffler.
Ethiopia deports Portuguese diplomats and missionaries.
Einkommende Zeitungen becomes the first German daily newspaper (ceases 1918).
The town of Sharon, Massachusetts is founded.
Estimation – Istanbul becomes the largest city of the world, taking the lead from Beijing.<ref>{{#invoke:citation/CS1|citation