Youhanna Chiftichi
Youhanna Chiftichi was a Coptic priest and scholar in the 18th and 19th century, who taught Coptic to Jean-François Champollion, thus paving the way for the latter to decipher the Egyptian hieroglyphs. His name has been frequently misspelled as "Icaha Scheptichi" or "Jeacha Sceptidschy".