Which Targaryen has the dragon Rhaegal named after him?
Rhaegal is named for Rhaegar Targaryen, Daenerys Targaryen's eldest brother.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Which Targaryen has the dragon Rhaegal named after him?
### Input: 
### Response: Rhaegal is named for Rhaegar Targaryen, Daenerys Targaryen's eldest brother.