The Noble and Most Ancient House of Black

Everybody whispered that The Noble and Most Ancient House of Black was pure of blood and cunning of mind. How cunning, however, was something Sirius Black was going to learn the hard way. Shirking his duty to bear heirs as first born son won't be tolerated any longer. Tricked into siring not one, but two children, Sirius has to face some hard realities about his bloodline.