You’re right, actually, it isn’t. The Black family is just called “the Noble and Most Ancient House of Black”, it doesn’t actually have any members with any sort of title. So there isn’t any nobility.
Sources: NaMAH search, nobility in Harry Potter
You’re right, actually, it isn’t. The Black family is just called “the Noble and Most Ancient House of Black”, it doesn’t actually have any members with any sort of title. So there isn’t any nobility.
Sources: NaMAH search, nobility in Harry Potter