Gunpowder Plot: The trial of Guy Fawkes and other conspirators begins, ending with their execution on January 31.

The Gunpowder Plot of 1605, in earlier centuries often called the Gunpowder Treason Plot or the Jesuit Treason, was an unsuccessful attempted regicide against King James VI of Scotland and I of England by a group of English Roman Catholics, led by Robert Catesby, who considered their actions attempted tyrannicide and who sought regime change in England after decades of religious persecution.

Guy Fawkes, also known as Guido Fawkes while fighting for the Spanish, was a member of a group of provincial English Catholics involved in the failed Gunpowder Plot of 1605. He was born and educated in York; his father died when Fawkes was eight years old, after which his mother married a recusant Catholic.

January 27 is the 27th day of the year in the Gregorian calendar; 338 days remain until the end of the year.