King Fredrick ruled the Kingdom, known for being a leader to his adversaries, while fiercely safeguarding his subjects.

Marriage within the Targaryen family was customary, so Viserus was wedded to his older sister, Anna, as part of this tradition. They had one daughter and one son together.

Although Viserus harbored deep feelings for his younger sister, Ameera—who was a renowned dragon rider traveling abroad—he was unable to pursue a relationship with her, given his existing marriage to Anna.