I have Harvey and Mary Jane Hudson and their children in the database. I did not have that particular mercy Abbott connection (The other Mercy married Henry Grigg Hewett), but here again it is odd, because I do have a James Hudson who married a Mary Jane Vale, their daughter Mary Ann married Gottlieb Wilhelm Andreas Schuetze. Is he one and the same or someone different? I have other connections to Hudsons as well. Another book you may be interested in is one on the Kitto family which has been published as Alice Jane Hill married James Adams Kitto. My email contact is firstname.lastname@example.org to get me directly. I have a number of connections through to the Francis families (92 listed so far, but not all of the same family) so there may well be a connection somewhere there.