The Voluntown Campbells seem to be of the wrong immigration timeline. I did find a snippet of a source that I am waiting to hear back on from the Clan Campbell Society of North America. It is from their journal, citation as follows:
“Ancestry of Major General Wendell Campbell-Carter and his Sister Anne Campbel Smith”Journal of the Clan Campbell (1987) v14-16, p38
...”is son, Hugh, went back to Scotland and returned with three sons, Andrew of Mansfield, Connecticut, David, and Charles, ... There is a theory that Hugh Campbell's second son David might be the same as the first member of the family on ..."
This David Campbell lived and died in Hampden County, Massachusetts, up the river valley from Mansfield. I am related to Andrew and, by way of descent, Peter, Horace, James Martin Campbell, and Katherine Jane Campbell.