House Targaryen is one of the most prominent families in Westeros. As the new Game of Thrones spin-off is coming up, it would be great to brush up on your Targaryen family history. As per the Targaryen Family Tree, House Targaryen starts with Aerion Targaryen, Aemon Targaryen, and Aegon V Targaryen. Aegon married Betha Blackwood and gave birth to Duncan Targaryen, Aerys II Targaryen, Rhaella Targaryen, and Daeron Targaryen. Aerys and Rhaella married and gave birth to Rhaegar Targaryen, Viserys Targaryen, and Daenerys Targaryen. According to the Targaryen Family Tree, Daenerys married Khal Drogo and later had an affair with her nephew, Jon Snow.