Shrovetide (a Catholic religious observation; a loanword from Spanish)
(ca. 1582, Mexico City) Luis Reyes García, ¿Como te confundes? ¿Acaso no somos conquistados? Anales de Juan Bautista (Mexico: Centro de Investigaciones y Estudios Superiores en Antropología Social, Biblioteca Lorenzo Boturini Insigne y Nacional Basílica de Guadalupe, 2001), 142–143.
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.