Short answers, pulled from the story.
Daenerys Targaryen was born during a great storm over the Red Keep, earning her the nickname Stormborn. Her mother Queen Rhaella died in childbirth, leaving the infant and her older brother Viserys to be whisked away by Ser Willem Darry to Braavos before Robert's forces could capture them.
Daenerys Targaryen stepped into the fire of her husband Drogo's funeral pyre holding three petrified dragon eggs and emerged unburned with three baby dragons named Drogon, Rhaegal, and Viserion. This miracle allowed her to escape the Red Waste and arrive in the city of Qarth where she unsuccessfully appealed to the Thirteen for aid in reclaiming the Iron Throne.
Emilia Clarke was recast as Daenerys following an audition in 2010, with creators D. B. Weiss and David Benioff stating she was the only person they saw who could carry the full range that Daenerys required. Tamzin Merchant played Daenerys in the original pilot but Elizabeth Olsen also auditioned before Clarke took over the role.
Clarke's portrayal has garnered Primetime Emmy Award nominations for Outstanding Supporting Actress in a Drama Series in 2013, 2015, and 2016, and Outstanding Lead Actress in a Drama Series in 2019. She became one of the highest paid actors on television, earning between 1.2 million and 2 million per episode in 2017.
There were 108 newborn American girls who were given the name in 2021, and another 123 newborn American girls were given the name in 2022. The name declined in popularity after the end of the series but remains in regular use.
Jon Snow fatally stabbed Daenerys as she lay in his arms, weeping. Drogon arrived and melted the Iron Throne before leaving Westeros with Daenerys's body, grieving.