Question: Anna Riva (1922–2003) was the pen name of who, a well-known American occult author and manufacturer of Hoodoo spiritual supplies, a traditional African American folk spirituality that developed from a number of West African spiritual traditions and beliefs? 
Sentence (from "Anna Riva"): According to Catherine Yronwode, "Anna Riva" was a nom de plume that this author used only in her writing and business; Anna was her mother's name and Riva was her daughter's name.
Relevant evidence: No