William Barrow was a 17th-century English Jesuit priest and missionary who served the Catholic community in London for over three decades. Born in Lancashire in 1609, he joined the Society of Jesus in 1632 after studying at St. Omer's. He eventually rose to the position of superior for the London district. His life ended during the anti-Catholic hysteria known as the Popish Plot, when he was falsely accused of treason and executed at Tyburn in June 1679.