I've been working on some collateral lines of my own family and have found a family that is either a duplicate of the family I'm working on or an incredible collection of doppelgangers. The profile I started working on today is Aaron Morrill (linked to this question), who got married in the usual way to one Joanna (Dow) Heath or Joanna (Heath) Dow, and went on to have several children with her. She died in 1735 or 36 and he married a second time, to Ebenezer Jones, and had another two children.
I hunted for sources and found them. I'm inclined to think that Joanna's LNAB was Dow, because I found a birth source for a Joanna Dow, daughter of Henry and Mary, and her marriage record to Aaron says her father's name was Henry. And I found sources for all the weddings and births, and even for Aaron's death in 1760.
The trouble is that all of my sources say this took place in Massachusetts, and mostly in Salisbury. There's another profile, however, for an Aaron Morrill (Morrill-385) married to a Joanna Dow (Dow-919), with a child of the same, very unusual name (Theodate), as one of the other Aaron's children. These other Morrills and Dows are all from New Hampshire. The profiles have no sources other than a page number in The History of the Town of Hampton, New Hampshire, written in 1892 by one Joseph Dow. There are a couple of sources for the New Hampshire Aaron, but they're all sources I found for my Aaron and all are from Massachusetts.
I left a note on the profile of the other Aaron, but I was hoping that someone who knows more about this line could tell me if my hunch is correct and these are duplicates. I would like to add Joanna Dow Heath Morrill to Aaron's profile, but I don't want to create a duplicate.