Is Jon Snow a twin?

Related questions

1. Is Wyvern stronger than dragon?
2. Can Jon Snow make dragons?
3. What is a wingless dragon called?
4. Are Daenerys and Jon Snow related?
5. Is smaug a Wyvern?
6. What is a child dragon called?
7. Does Eragon's dragon die?
8. What happens to Jon Snow's Dragon?
9. Which of Daenerys Dragons is the strongest?
10. Who killed Balerion?

Tags

1. #might
2. #rhaegar
3. #revealed
4. #theory
5. #lyanna
6. #claim
7. #targaryen
8. #learned
9. #actually
10. #season
11. #finale
12. #greater
13. #thrones
14. #however
15. #legitimate
16. #argues
17. #stark
18. #aegon
19. #could