I believe it's only administrators who can create/modify categories. There is a category "Scores published by Boivin." But "Boivin" is really two different people. From the beginnings (around 1724) up to 1733 it's François Boivin. He died on November 25, 1733 and was succeeded by his widow, usually calling herself "La veuve Boivin" (or using any number of diminutive variations of "veuve"). She continued on until about 1753.
Can someone make two distinct categories? I'd be happy to take the time re-categorizing the many entries.
Category "Scores published by Boivin" needs separation
Moderator: kcleung