The 1970s was the time of Lord Voldemort's first rise to power. Though Muggles, of course, remain oblivious to the war, this time is remembered by the wizarding world as a violent time of terror and bloodshed.
Voldemort's followers, the Death Eaters, tortured and murdered many Muggles and Muggle-borns for sport. Due to extensive use of the Imperius Curse, it was hard to tell who was on which side and many who served Voldemort later claimed to have been under the influence of the Imperius Curse.
With Harry Potter's defeat of Voldemort in October of 1981, the war seemed to be over, but this, unfortunately, was not the case. With Voldemort's return to full power in 1995, much of the second half of the 1990s became Voldemort's second, albeit shorter, but much more violent reign of terror.
Additionally, many of the combatants of the Second Wizarding War were born during the war in this decade and 1980 and 1981, including Bill Weasley, Charlie Weasley, Percy Weasley, Fred and George Weasley, Hermione Granger, Cho Chang, Harry Potter, Ron Weasley, Ginny Weasley, Draco Malfoy, Luna Lovegood and Neville Longbottom among numerous others.
- 1970 to 1972: The Slytherin Quidditch team was captained by Steve Laughalot.
- 1972 to 1976: The Slytherin Quidditch team was captained by Emma Vanity.
- 1974: The eighty-second Wizarding Schools Potions Championship is held.
- 1975: Minister for Magic Eugenia Jenkins is seen as inadequate to the challenge of the first rise of Lord Voldemort, and is replaced by the hard-lined Harold Minchum.
- 1976: The Slytherin Quidditch team was captained by Lucinda Talkalot.
- James Potter played as a Chaser for Gryffindor sometime in this decade.
- At some point during this period, the Gryffindor team won the Quidditch cup.
- M. G. McGonagall played on the Gryffindor Quidditch team, winning an award for it.
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- Wonderbook: Book of Potions
- Pottermore - New from J.K. Rowling: "Ministers for Magic"
- 16 October 2000 Scholastic Chat with J.K. Rowling
- Harry Potter and the Prisoner of Azkaban, Chapter 14 - (Snape's Grudge) - Severus Snape states that James Potter felt "rules were for lesser mortals, not Quidditch Cup winners."