Georgios Sakellarios
Georgios Sakellarios (Greek: Γεώργιος Σακελλάριος; 1765–1838) was a Greek scientist, physician, philosopher, and revolutionary. He served as chief physician to high-ranking officials of the Ottoman Empire, including Ibrahim Pasha in Berat and Ali Pasha of Ioannina in Ioannina.
He was born in the Macedonian city of Kozani, then part of the Ottoman Empire, and studied medicine in Bucharest und Vienna. He was a student of, among others, Johann Peter Frank. In addition to his post at the court, he was an associate of Rigas Feraios (Greek: Ρήγας Φεραίος).