Is Grindelwald related to Voldemort?

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Tags

1. #potter
2. #reference
3. #introduced
4. #albus
5. #dumbledore
6. #while
7. #stone
8. #search
9. #headmaster
10. #deathly
11. #voldemort
12. #first
13. #harry
14. #hallows
15. #continued
16. #hogwarts
17. #primary
18. #defeated
19. #grindelwald
20. #predecessor
21. #series
22. #antagonist
23. #sorcerer