John Nettleship Inspired Severus Snape

A British chemistry teacher named John Nettleship helped inspire Professor Severus Snape in the Harry Potter books. Nettleship had taught J.K. Rowling at Wyedean School, and at first he felt upset when people linked him to the cold, intimidating potions master. He later embraced the connection and even wrote a book about his life and his unexpected place in Harry Potter history.

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