Why is Jon the rightful heir?

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Tags

1. #which
2. #lines
3. #traditional
4. #aerys
5. #surviving
6. #after
7. #naturally
8. #rightful
9. #death
10. #actually
11. #eldest
12. #targaryen
13. #rhaegar
14. #would
15. #throne
16. #succession
17. #means