The 17th and last member of the Targaryen dynasty to hold the title of King was Aerys II Targaryen, father to Game of Thrones fan-favorite Daenerys Stormborn. Only one of them was referred to in
Aerys’s son, Rhaegar Targaryen — Daenerys’s brother, the crown prince and heir to the throne, whom we now also know as Jon Snow’s father — fell in love with Lyanna Stark, Ned Stark’s sister, even
Memorably, Daenerys had a short-lived but fiery romance with Jon Snow, who, as the Season 7 finale of Game of Thrones revealed, turned out to be the son of Lyanna Stark and Rhaegar Targaryen,This led to the marriage of Rhaegar Targaryen and the Dornish princess Elia Martell. They had two children, Rhaenys and Aegon. However, Rhaegar’s fell in love with Lyanna Stark, the sister of House Targaryen carries the trait for insanity in its bloodline. Over three hundred years of heavy inbreeding, marrying brother to sister whenever possible to "keep the bloodline pure," resulted in many of the medical problems seen with incest, particularly mental instability. The most prominent example of the Targaryen madness was the last
The full Targaryen family tree is complicated enough for its own book series Game of Thrones followed her efforts to raise an army and learn how to rule, first as Khaleesi, then as the Breaker
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