1. Born in 1883
2. Known in both the United States and Europe
3. Attended Durmstrang Institute

Gellert Grindelwald (c. 1883 – March, 1998) was considered to be arguably one of the most dangerous Dark Wizard of all time, A student at Durmstrang Institute, Grindelwald was expelled for twisted, dark experiments and near-fatal attacks on his fellow students. He later fostered a friendship with a young Albus Dumbledore, making plans to find the Deathly Hallows and lead a Wizarding revolution to end the International Statute of Secrecy