Marcellus Empiricus
Marcellus Empiricus, also known as Marcellus Burdigalensis (“Marcellus of Bordeaux”), was a Latin medical writer from Gaul at the turn of the 4th and 5th centuries. His only extant work is the De medicamentis, a compendium of pharmacological preparations drawing on the work of multiple medical and scientific writers as well as on folk remedies and magic. It is a significant if quirky text in the history of European medical writing, an infrequent subject of monographs, but regularly mined as a source for magic charms, Celtic herbology and lore, and the linguistic study of Gaulish and Vulgar Latin. Bonus auctor est (“he’s a good authority”) was the judgment of J.J. Scaliger, while the science historian George Sarton called the De medicamentis an “extraordinary mixture of traditional knowledge, popular (Celtic) medicine, and rank superstition.” Marcellus is usually identified with the magister officiorum of that name who held office during the reign of Theodosius I.