Are Daenerys and Viserys twins?

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Tags

1. #rhaegar
2. #aerys
3. #exiled
4. #daenerys
5. #targaryen
6. #house
7. #robert
8. #older
9. #remnants
10. #father
11. #brother
12. #following
13. #rebellion
14. #younger
15. #viserys
16. #against
17. #their