 But his contemporary, the music theorist Johannes Tinctoris names him in three different treatises as "Firminus Caron" and the Vatican choirbook San Pietro B80 has "F. Caron" written above its copy of his "Missa L'homme armé".Attempts in the past to identify him with people named Philippe Caron and Jean Caron are therefore to be discarded.Furthermore, a reference to "Firminus Caron" as "primus musicus" at Amiens cathedral in 1422 has now been shown to be misdated