When fans heard the name Leta Lestrange in the Harry Potter spinoff, Fantastic Beasts, it immediately sparked questions about her connection to the infamous Bellatrix Lestrange. As Voldemort's most loyal servant, Bellatrix committed heinous acts in his name, including murdering Harry Potter's godfather and her own cousin, Sirius Black. Leta Lestrange was less malicious than her distant-future relative but nevertheless carried the dark nature associated with the Lestrange family name.
Source：https://www.cbr.com/lestrange-family-bellatrix-leta-harry-potter/
