Persephone

Persephone is a female character in the Henry Skreever book series, and Prunella often imagines herself as Persephone. At the end of the series, it is possible that Persephone is a 'spirit from the noble order', and it is also said she she dies at the end of the book (if she was a spirit from the  noble order, she would not really have died.) Marina and Prunella pronounced her name 'Per say phone' until Mr. Ratburn corrected Prunella. She is possibly a parody of Hermione from Harry Potter, the series Henry Skreever is based off of, although the character neither dies at the end of the series nor is a spirit.