Domingo Francisco de San Antón Muñón Chimalpahin Quauhtlehuanitzin, usually referred to simply as Chimalpahin or Chimalpain, was a Nahua annalist from Chalco. His Nahuatl names mean "Runs Swiftly with a Shield" and "Rising Eagle", respectively, and he claimed descent from the lords of Tenango-Amecameca-Chalco. He was the grandson of the late Don Domingo Hernández Ayopochtzin, a seventh-generation descendant of the founding king of the polity. Don Domingo was learned and esteemed, especially for his education and his record-keeping skills in the ancient tradition.