Which Targaryen has the dragon Rhaegal named after him?
Rhaegal is named for Rhaegar Targaryen, Daenerys Targaryen's eldest brother.
<START_INST>Which Targaryen has the dragon Rhaegal named after him?<END_INST><START_CTX><END_CTX><START_A>Rhaegal is named for Rhaegar Targaryen, Daenerys Targaryen's eldest brother.<END_A>