Hi Stewart,
I first noticed the fact that only one son was the farmer in census reports, and others would be "carpenters, shoemakers, fishermen" and the like.
It makes sense, in a way, because dividing property in ever smaller sizes each generation would ensure no one would have income sufficient to raise a family.
I also notice that a lot of the daughters were listed as "dressmakers." Was that really an industry for export or were they merely making clothes for their own families?
Deeding land to one descendant made sure that others ended up making sufficient incomes to support a family by emigrating.
In Mexico the law keeps land in some sort of communal ownership which resulted in a lot of poor farmer families in the rural areas, and those parts are where most of the Mexican emigration to the States derives.
The United States has for years had the result of decreasing farm populations at the same time as increasing farm size where the work is done by machines (very expensive ones.)
All four of my grandparents were the children of farmers. Today, I know of only one farmer of all the descendants of my grandparents' 15 children.
Ken