Research in America
The usual sources for genealogy research in Canada and the US such as census records, birth, death, and marriage records are quite helpful for the period we're interested in, which is after William and Jane arrived in Saint John in 1819. The challenge is idetifying the community, province or state.
While official sources provide dates and relationships, a good source for narrative on people is community newspapers and historical compilations. For example, archives of the Kings County Record published in Sussex , NB and the Telegraph Journal published in Saint John, NB have been helpful in our research.