Druella Black

Druella Black (née Rosier) (fl. 1951-1955) was a pure-blood witch who married Cygnus Black III. The couple had three daughters: Bellatrix, Andromeda, and Narcissa Black.

Biography
Druella was a member of the Rosier family, a family that strongly believed in blood purity.

Druella and her husband had three daughters: Bellatrix, Andromeda, and Narcissa. Bellatrix was the oldest and Narcissa the youngest. Her oldest and youngest shared her belief in the importance of blood purity. This belief led them to make acceptable pure-blood marriages, Andromeda however did not.

Through Andromeda (who was disowned for marrying Muggle-born wizard Ted Tonks) she is the grandmother of Nymphadora Tonks and great-grandmother of Teddy Lupin. Through Narcissa, she is the mother-in-law of Lucius Malfoy, the grandmother of Draco Malfoy, and great-grandmother of Scorpius Malfoy.

Druella may be related to Gellert Grindelwald's lieutenant Vinda Rosier, the Death Eater Evan Rosier, and another Death Eater named Rosier.