premise: Daenerys Targaryen's dragon is named Viserys.
hypothesis: A Game of Thrones is the first novel in A Song of Ice and Fire , a series of fantasy novels by American author George R. R. Martin . Daenerys Targaryen . Introduced in 1996 's A Game of Thrones , Daenerys ( along with her older brother , Viserys ) is one of the last confirmed members of House Targaryen who , until fifteen years before the events of the first novel , had ruled from the Iron Throne for nearly three hundred years . Knowing no other life than one of exile , she remains dependent on her abusive older brother , Viserys . The timid and meek girl finds herself betrothed to Dothraki horse lord Khal Drogo , to ensure Viserys an army for his return to Westeros and recapture of the Iron Throne .