[usrusr]

I suspect that the ranking is somewhat distorted by the data source: every person working in the general field of notary would be represented in those lists of taxed household heads, whereas in e.g. the field of stonemasonry this would only be true only for a few masters I think, but not for their apprentices or various other forms of low-level support. And I suspect that the wandering stonemasons traveling from project to project wouldn't appear there either. In short: I suspect that interpreting the source like that might be a tiny little bit like trying to derive the percentage of Americans working as plumbers by looking at what is listed at the NYSE.