Fantastic Beasts: The Crimes of Grindelwald - The Original ScreenplayVinda's loyalty to Gellert Grindelwald Vinda[3] Rosier was a French witch who lived during the early 20th century.[4] She was a member of the famous pure-blood Rosier family[5] and a loyal acolyte of Gellert Grindelwald.[6][7] Vinda Rosier became a loyal follower and acolyte of Gellert Grindelwald at some point before 1927. She appeared to be Grindelwald's personal lieutenant.[8] Several months following his escape from MACUSA