The Dragon of Duskendale -- A Song of Ice and Fire Fanfic

The Targaryens have a history of madness, and no one knows it better than Aelor, second son of the Mad King. Amidst his father's destructive behavior and his elder brother's decision to run off with a girl who wasn't his wife, it will take every ounce of his Targaryen charm and skill at arms to save the greatest dynasty in Westeros...and that still might not be enough