Which Targaryen has the dragon Rhaegal named after him?
Rhaegal is named for Rhaegar Targaryen, Daenerys Targaryen's eldest brother.
### Instruction: Which Targaryen has the dragon Rhaegal named after him?
### Context: 
### Answer: Rhaegal is named for Rhaegar Targaryen, Daenerys Targaryen's eldest brother.</s>