- He, and his brother Thomas Wintour became of of the group of conspirators who hid barrels of gunpowder beneath the Palace of Westminster.
- He hid at the house of Humphrey Littleton. After capture, he was taken to London, tried for treason, convicted and executed by hanging, drawing and quartering.
1605 - He was one of the leading members of the Gunpowder Plot to assassinate James I of England and Members of Parliament.