CaptainWacky
I want to smell dark matter
The Mad King Aerys was Viserys and Dany's father. He was overthrown by Robert and Ned Stark in the Rebellion about sixteen years ago (Dany was born right at the end of the war in a crazy storm). They had an older brother Rhaeger (who Dany plans to name her baby for: Rhaego) who kidnapped Ned's sister who was betrothed to Robert. He was killed in battle by Robert. The Mad King was killed by Jaime who broke his oath to the king. All the other Targaryens were killed including Rhaeger's infant children who were brutally murdered by The Mountain, who also raped and murdered their mother (I don't think this is a spoiler since it happened 16 years ago and probably won't be mentioned in the show for a long time if at all.) Viserys and Dany have been staying with supporters across the sea since then.