40 Creepy Facts About The Black / Lestrange Family From Harry Potter
Their Male Line is Done
Regulus died before the series began, and Sirius dies in the fifth book. Since neither one of them left any children behind, it seems the male line of Blacks is done. As a result, the name is likely to die out completely. It seems like an oddly defiant act that Sirius refused to have children. It was almost as if he wanted his cursed family name to disappear forever.
Regulus may have wanted to produce a Black heir at one time, but his change of heart likely made him realize how much baggage his family gave him while he was young.