Coradoiz
Coradoiz (OFr.) or cor à doigts, fingerhole horn, a precursor of the cornett. The term occurs from the 13th c. to the 15th (“Ces cors c'on sonne as dois” are mentioned in the 13th-c. Sone de Nausay) (35). Bröcker, Fritz. Die Blasinstrumente in der altfranzosischen Literatur. Giessen, 1926.