Who is gellert grindewald?

Answer 1

Gellert Gindelwald (1840-1998) was a Dark Wizard defeated by Dumbledore in 1945, although the two were once great friends.

Great-nephew of Bathilda Bagshot, who was Dumbledore's neighbor when his family lived at Godric's Hollow, he struck up a friendship with Dumbledore when he came to visit his great-aunt. The two became obsessed with gaining power, particularly through the attainment of the Deathly Hallows. The break in friendship between Dumbledore and Grindelwald came when Aberforth Dumbledore confronted his brother and his friend about their plans, provoking a three-way duel. In the chaos, Ariana Dumbledore was killed, causing Grindelwald to flee the country.

Gindelwald eventually stole the Elder Wand, one of the Deathly Hallows, from the wandmaker Gregorovitch, but lost the wand to Dumbledore after their famous duel.

He founded the prison Nurmengard to hold his opponents, although he was sent there himself after his fall from power, and was killed there when he was confronted by Voldemort and told the latter that he no longer had the Elder Wand.