I have some lace-making ancestors - Morgans from Nottingham - though I think they were also framework knitters/stockingers/cordwainers/glovers, depending on the individual and the year. Because many people doing research first come across occupation information from the census returns, a lot could be hidden. Women and children are often given as "wife" and "scholar" (or even nothing), where in fact they also worked. If your female ancestors aren't listed as having an occupation of their own on the census, look around the local area to see what adult unmarried women were doing. It's a reasonable assumption that in a working-class household the women were economically active to some degree. Of course it isn't proof that they were X or Y, but it can act as a hint.