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Albus Dumbledore Born (Month/Day Unknown)
Albus Percival Wulfric Brian Dumbledore was born in the summer of 1881 in Mould-on-the-Wold, England. -
Gellert Grindelwald Born (Month/Day Unknown)
Gellert Grindelwald was born in Europe sometime during the year 1883 -
Aberforth Dumbledore Born (Month/Day Unknown)
Aberforth Dumbledore born in Great Britain. -
Ariana Dumbledore Born (Month/Day Unknown)
Ariana Dumbledore was born in Great Britain -
Ariana Dumbledore attacked by Muggle Boys (Month/Day Unknown)
Ariana was attacked by a group of Muggle boys who saw her doing magic in her back garden - this made her magic uncontrollable and damaged her psychologically, possibly making her an obscurial -
Albus Dumbledore begins attending Hogwarts
Albus Dumbledore begins his first year at Hogwarts School for Witchcraft and Wizardry. He is sorted into House Gryffindor. -
Gellert Grindelwald begins attending the Durmstrang Institute (Month/Day Unknown)
Gellert Grindelwald begins his first year studying at the Durmstrang Institute. -
Aberforth Dumbledore begins attending Hogwarts
Aberforth Dumbledore begins his first year at Hogwarts School for Witchcraft and Wizardry. -
Grindelwald expelled from Durmstrang (Month/Day Unknown)
After his studies were deemed 'too dangerous for students', Gellert Grindelwald was expelled from the Durmstrang Institute in early 1899 -
Albus Dumbledore graduates Hogwarts (Day Unknown)
Albus Dumbledore sits his NEWTS and graduates from Hogwarts under a great deal of decoration and honours. -
Ariana's Accident (Month/Day Unknown)
In early summer, at age 14 Ariana's magic lashed out, causing an explosion which resulted in the death of their mother, Kendra Dumbledore. -
Gellert Arrives in Godric's Hollow (Month/Day Unknown)
Gellert Grindelwald joins his great-aunt in Godric's Hollow to continue his research on the Deathly Hallows. There he befriends Albus Dumbledore. -
Ariana Dumbledore Killed (Month/Day Unknown)
During a confrontation between Aberforth Dumbledore and Albus and Gellert, things turn nasty and a three-way duel erupts. In an attempt to stop it, Ariana intercedes but is struck by a curse and killed by one of the men. Gellert flees, indirectly taking legal blame for the death. -
Beginnings of the Formation of Grindelwald's 'army' (approximate)
The (relatively) slow formation of a gathering of like-minded wizards and witches rallying to Grindelwald's (and originally Dumbledore's as well) cause. -
Grindelwald Acquires the Elder Wand (Monte/Day Unknown)
Acquired by breaking into the workshop of Mykew Gregorovitch and casting a stunning curse at him before making off with the wand. The date for this is said to be somewhere between 1899 and 1945, but given that he is shown in Mykew's memories to be not much older than he was when he fled Godric's Hollow, I'm placing it in early 1900s, just as the First World War was kicking off. -
Beginning of the First World War
Major Muggle military conflict (as per history) with high levels of wizard involvement. -
First World War Ends
Ending of major Muggle military conflict (as per history) with high levels of wizard involvement. -
Beginning of the Global Wizarding War (approx. 1920s)
A wizarding conflict fought in continental Europe between varying powers and Gellert Grindelwald's revolutionary forces. -
Creation of Nurmengard (approximate year)
The erecting of the prison of Nurmengard in Europe. -
Failed Attempt at Infiltrating Nurmengard (Month/Day Unknown)
A group of wizards attempted to infiltrate Nurmengard, but were killed by Grindelwald before they could even walk in the door. Most likely took place early in 1926, given that Grindelwald may have spent most of the year in America under the guise of Percival Graves. -
The Events of 'Fantastic Beasts and Where to Find Them' (Exact Days Unknown)
During which Grindelwald impersonated the American wizard Percival Graves by way of an exceptionally powerful Transfiguration and infiltrated the hierarchy of American wizarding government in search of an Obscurial in New York. -
Final Duel between Grindelwald and Dumbledore (Month/Day Unknown)
Dumbledore finally concedes and tracks down Grindelwald to confront him, resulting in a three hour duel in which Albus eventually emerges the victor, disbanding Grindelwald's forces (or at least sending them into hiding) and imprisoning Gellert in his own prison. -
Albus Dumbledore Murdered
Albus Dumbledore was murdered by Severus Snape (at the former's instruction) atop the astronomy tower at Hogwarts Castle in the Scottish Highlands. -
Gellert Grindelwald Murdered (Day Unknown)
Gellert Grindelwald was murdered in his prison at Nurmengard in Europe by Voldemort after refusing to give up the location of the Elder Wand.