For whom is Daenerys Targaryen's dragon, Viserion, named for?
She named Viserion after her late brother, Viserys
<START_INST>For whom is Daenerys Targaryen's dragon, Viserion, named for?<END_INST><START_CTX><END_CTX><START_A>She named Viserion after her late brother, Viserys<END_A>