For some reason I am not able to continue typing on the previous post, so will continue here.
The descendants of William Abbott is lengthy and comprehensive, with sources cited in endnotes. The majority of them are in Andover. I did not look at them all, but did not see Nova Scotia anywhere, but once they left Andover, many did not have places listed. Tried to look for a Joseph born c.1800 which might be ours, but didn’t find anything that looked right.