Agnes was a patient in the Janus Thickey Ward at St Mungo's Hospital for Magical Maladies and Injuries, admitted sometime before Christmas of 1995. She had fur all over her head and barked instead of speaking. Her nurse mentioned that she had a son who would visit her Christmas night. It is possible that she remained at St. Mungo's for the rest of her life. Her exact ailment was unknown, but it was noted to be a similar effect to consuming Polyjuice Potion prepared with animal DNA.
Agnes is a female given name, which derives from the Greek word hagnē, meaning "pure", "holy" or "lamb".
- Harry Potter and the Order of the Phoenix (First appearance)
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