Her husband, Rodolphus Lestrange (a different one, not the previously mentioned Minister for Magic) hung out with Bellatrix a lot during their shared time at Hogwarts School of Witchcraft and ...

unable to determine the spell Molly Weasley used to kill Bellatrix Lestrange. The unlikely duel between the quirky mother and the ruthless Death Eater happened in the Great Hall within Hogwarts ...