David John Cawdell Irving (born 24 March 1938) is an English author and Holocaust denier who has written on the military and political history of World War II, especially Nazi Germany. He was found to be a Holocaust denier in a British court in 2000 as a result of a failed libel case. Irving's works include The Destruction of Dresden (1963), Hitler's War (1977), Churchill's War (1987) and Goebbels: Mastermind of the Third Reich (1996). In his works, he falsely claimed that Adolf Hitler did not know of the extermination of Jews, or, if he did, he opposed it.
https://en.wikipedia.org/wiki/David_Irving