"It’s always preferred witches." Sirius admitted with a tired shrug. "Grimmauld is meant to go to the eldest daughter of the House of Black, never the son. Mother only had two boys and well, Andy renounced the House a long time ago. Bella is too far away, and too tied to another House to take any place in the House of Black now, and Narcissa... she just doesn’t have what the house needs. When Dumbledore begged me to at least try and claim it so we could use it, I was convinced I’d get blasted just trying to unlock the door. I think it’s desperate, it’s the only reason it would let me in. There’s a larger manor house, out in Wales, that should be claimed by Lord Black, but it was too far from the Ministry to be an ideal headquarters."