Rosier is the surname of a pure-blood wizarding family, and one of the Sacred Twenty-Eight. They are related to the Black, Lestrange and Malfoy families.

Given these relations, as well as the participation of one Rosier in the Global Wizarding War as a Grindelwald acolyte, and later two Rosiers in the First Wizarding War as Death Eaters, it is likely that the Rosiers place great importance on their pure-blood heritage. They most likely felt disdain for Muggles and Muggle-borns, and practised the Dark Arts.


It is likely that members of the Rosier family have thick eyelids, as two of the daughters of Druella Rosier and Cygnus Black were described as having "heavily-lidded eyes" by Harry Potter. It is unlikely that this is a characteristic inherited from their father's side as no mention of this physical feature is ever made in relation to any member of the Black family.

Known family members

Behind the scenes

  • The inclusion of the Rosiers in a French family tree of the Lestrange family suggests that the family originated, or has branches in, France.


Rosier is French for "rose tree" or "rose bush" and is a common surname in Francophone areas. It is also the name of a fallen angel who was considered the patron demon of tainted love and seduction.


Notes and references

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