Despite the diligent efforts of archivists, there are a number of fifteenth-century composers for whom are lacking most or all of their biographical details. Not all of these are minor figures. Caron, Hayne van Ghizeghem and Loyset Compère were all active composers who achieved a large degree of contemporary esteem, evidenced not only by the number of concordances but even by direct references. Yet Caron has become so obscure that not even his forename is certain. Hayne van Ghizeghem disappears from Burgundian records while still a relatively young man. There are no records at all for Compère's early years, and his later career is plagued by gaps. At this point, it is not likely that much more documentation will be found to shed light on any of these individuals.