Carochi.

e.g. the Jesuit father Horacio Carochi was an expert in Nahuatl; his grammar (Arte de la Lengua Mexicana, 1645) is unequaled, particularly rich for its helpful diacritics

See Sell's comments in Bartolomé de Alva, A Guide to Confession Large and Small in the Mexican Language, 1634, eds. Barry D. Sell and John Frederick Schwaller, with Lu Ann Homza (Norman: University of Oklahoma Press, 1999), 20.