“You’re not on here!” said Harry, after scanning the bottom of the tree closely.
“I used to be there,” said Sirius, pointing at a small, round, charred hole in the tapestry, rather like a cigarette burn. “My sweet old mother blasted me off after I ran away from home - Kreacher’s quite fond of muttering the story under his breath.”
“But… why did you…?”
“Leave?” Sirius smiled bitterly and ran a hand through his long, unkempt hair. “Because I hated the whole lot of them: my parents, with their pure-blood mania, convinced that to be a Black made you practically royal… my idoit brother, soft enough to believe them… that’s him.”
Sirius jabbed a finger at the very bottom of the tree, at the name Regulus Black. A date of his death (some fifteen years previously) follow lower the date of birth.“
"You and Tonks are related?” Harry asked, surprised.
“Oh yeah, her mother, Andromeda, was my favorite cousin,” said Sirius, examining the tapestry closely. “No, Andromeda’s not on here either. look -”
He pointed to another small round burn mark between two names, Bellatrix and Narcissa.
“Andromeda’s sisters are still here because they made lovely, respectable pure-blood marriages, but Andromeda married a Muggleborn, Ted Tonks, so -.”