(c. 1480-1564), French schoolmaster, a native of Normandy or Perche. He possessed special tact and liking for teaching children, and taught first at Paris, where Calvin was among his pupils, and, after a number of changes, finally at Geneva, where he died on the 8th of September 1564. He wrote several books for children; the most famous is his Colloquia (Colloquiorum scholasticorum libri quatuor), which has passed through innumerable editions, and was used in schools for three centuries after his time. He also wrote: Principia Latine loquendi scribendique, sive selecta quaedam ex Epistolis Ciceronis; De corrupti sermonis apud Gallos emendatione et Latine loquendi Ratione; De syllabarum quantitate; Conciones sacrae viginti sex Galliae; Catonis disticha de moribus (with Latin and French translation); Remontrances et exhortations au roi et aux grands de son royaume. See monograph by E. A. Berthault, De M. Corderio et creatis apud Protestantes litterarum studiis (1875).