Kathryn Lestrange is the daughter and only child of Bellatrix Lestrange (neé Black) and Rodolphus Lestrange.
In The Seventh Year of Rose WeasleyEdit
Kathryn is one of Rose's close friends and a Gryffindor. Up until Chapter 12, Rose knows that she is the daughter of two loyal Death Eaters, but in Chapter Twelve, Kathryn admits that she is, in fact, Kathryn Lestrange instead of Kathryn Allen. She admits this only because she has a crush on Albus Potteand Rose wants to know why she thinks he would hate her.