In which year did Tom Marvolo Riddle, known as the most powerful and dangerous Dark Wizard of all time, die?

Tom Marvolo Riddle (December 31, 1926– May 2, 1998), later known as Lord Voldemort, was a half-blood wizard and considered to be the most powerful Dark Wizard of all time. He was the son of wealthy Muggle Tom Riddle Sr., and witch Merope Gaunt, who died shortly after childbirth. He was the heir of Salazar Slytherin and was ordered to finish his work. Tom Riddle Sr. left his wife soon after she became pregnant with their son, having been released from the enchantment of a love potion which had started their relationship. Their son, Tom Marvolo Riddle, was born and raised in a Muggle orphanage, but eventually attended Hogwarts School of Witchcraft and Wizardry (1938-1945) and was sorted into Slytherin house.

Tom Riddle was the most talented pupil to ever attend Hogwarts. To the school at large he appeared to be an exceedingly handsome and polite child. In reality, however, Riddle was cruel, arrogant, sadistic, manipulative, psychopathic and megalomaniacal. Having achieved outstanding grades in every examination he took, Riddle left Hogwarts and went on to a brief employment at Borgin and Burkes, before disappearing from public view completely.