Aemon is the maester at Castle Black and is one of Lord Commander Jeor Mormont's closest advisers in the Night's Watch. He was born Aemon Targaryen and is the last known Targaryen in Westeros. He is the great-uncle of Daenerys Targaryen, who is unaware of his existence, and unknown to him, he is the great-great uncle of Jon Snow. Aemon's origins have long been forgotten by most, as he has remained dedicated to his vows as a Maester and a brother of the Night's Watch for many decades.