At the end of the first season, the four dragons were reborn in the pyre of Khal Drogo with the dragon mother, and their names were Drogon, Rhaego, and Viserion. The birth order of the three dragons is unknown, but viewers are accustomed to calling Drogon the eldest, Rhaegal the second, and Viserion the third. Long Ma named them after the three men closest to her. The big dragon Drogon was named after her husband, the horse king Drogo, the second dragon Rhaegal was named after the eldest brother Rhaegar, and the third dragon Viserion was named after the second brother Viserys. . It's still possible that hints of a fourth dragon could have an impact on the final four episodes. Some people speculate that there may be other dragons in Westeros, or even one that slumbers beneath Winterfell. In the original book, it is said that a dragon laid an egg in the underground hot springs of Winterfell.