I was interested in your enquiry about North Britain because I have found an
ancestor who was born in North Britain in c.1740. I knew, too, that after
the Act of Union at the beginning of the 18th century some people used to
refer to Scotland as 'North Britain' and so I originally thought that he was
However, in the way that on these lists we find lots of helpful researchers
with lots of valuable information, I discovered that he came from
Stalybridge in Lancashire, and that his parents owned a farm in a district
called 'North Britain' which was at the top of a hill on the way out of
Stalybridge. It was the sort of area where there was a mixed economy of hill
farming and weaving in the eighteenth century.
As Stalybridge is very near to Manchester - part of it now, I guess - and it
is only about 40 miles from Liverpool, it is feasible that he could have
been brought up there and become a mariner.
Anyway - a long shot, perhaps, but one which might be worth pursuing.