Might a fuller work in a dyeworks? I have two different occupations - 'fuller' and 'dyer' - belonging to two people of the same name. I'm hoping that they are same person.
Quite probably. A Fuller cleaned wool by getting rid of the lanolin and oils, using Fullers Earth - hence the title. Without this process, any mordent (the way that the wool was prepared so that any dyes would set) would not work. So, Fulling (cleaning), mordenting and then dyeing would be the process.
