Sybill Trelawney's first prophecy, sometimes simply known as The Prophecy, refers to the prophecy made by Sybill Trelawney to Albus Dumbledore at the Hog's Head Pub in 1980. It referred to a boy born at the end of July, who has the power to defeat Lord Voldemort (which Voldemort took to mean Harry Potter). It is refereneced at the end of the Secondary Wizarding War, as public knowledge and named "The Big One", in respect of the prophecy and the sequenced events from it.