an Entity references as follows:
Engarandus Juvenis, "Enguerrand the Younger" (fl. 1480s-90s) is a composer, presumed to be of French origin, whose three known works are all preserved in a single codex in the Cistercian monastery of Staffarda, Italy. He is notable as the composer of the earliest surviving example of a polyphonic setting of a Requiem mass complete with Dies Irae section.