How many sons did rhaegar have?

Related questions

1. Who married rhaegar and Lyanna?
2. Were Lyanna Stark and rhaegar married?
3. Do the Dragons know Jon Snow is a Targaryen?
4. Why did littlefinger have Jon Arryn killed?
5. Why did the mad king kill Ned's father?
6. Why does Ned Stark say Jon Snow is his son?
7. Is Jon Snow Eddard Stark's son?

Tags

1. #moved
2. #beauty
3. #rhaenys
4. #sorrow
5. #tears
6. #played
7. #children
8. #tourney
9. #aegon
10. #rhaegar
11. #daughter
12. #feast
13. #lyanna
14. #stark
15. #named