Mordicus Egg

Origin: Harry Potter
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Species: Human
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Residence: Funke Street 23 (25-109)
Occupation: Author (non-fiction; writes on magical & non-magical people)
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Talent: Magic
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Import Date: 5

Professor Mordicus Egg (fl. 1963–1993) was a wizard and an expert on Muggles. He authored two known books on Muggles.[1][4] He also served as a Professor and later Headmaster at Hogwarts School of Witchcraft and Wizardry.

Biography
Egg was born prior to 1963 and eventually became a Professor[1] and later Headmaster at Hogwarts School of Witchcraft and Wizardry in his older years.[3] His name was carved into the wall of the Divination Classroom in the North Tower.
He was either visiting or working at Hogwarts in the winter of 1993, where he was seen on the Marauder's Map.

Works The Philosophy of the Mundane: Why the Muggles Prefer Not to Know[1]
Cooking the Muggle Way