Mr Hornby was the brother of Olive Hornby. Moaning Myrtle showed up uninvited at his wedding because she was haunting Olive, his sister, and apparently made a scene to remind Olive of the bullying she put up with when she was still alive. It was so big of a mess that Olive had to get help from the Ministry of Magic in getting rid of the ghost.[1]


Notes and references

  1. Harry Potter and the Goblet of Fire, Chapter 25 (The Egg and the Eye)
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