Thank you Marmalady and Stan.
What you say corresponds to my preconceived thoughts. As to which domain - e.g., marine, factory, agric., forestry, etc. - I have nothing to go on.......and i searched extensively the Census records preceding and following 1866 for a person with the same name in Lancashire and daughter, looking at occupations.
Your effort to help me is very much appreciated.
- Neal
California