Harry Potter: "You ran away from home?"
Sirius Black: "When I was about sixteen. I'd had enough."
Harry Potter: "Where did you go?"
Sirius Black: "Your dad's place. Your grandparents were really good about it; they sort of adopted me as a second son. Yeah, I camped out at your dad's in the school holidays, and when I was seventeen I got a place of my own. My Uncle Alphard had left me a decent bit of gold — he's been wiped off here, too, that's probably why — anyway, after that I looked after myself."
— Sirius Black to Harry Potter in 1995[src]
Alphard Black (between 1925 and 1938[1] — 1976/1977[2]) was a pure-blood wizard from the noble Black family and was a Slytherin student at Hogwarts School of Witchcraft and Wizardry.