John Welch, the Revolutionary War soldier,who married Jemima Morgan, in wikitree is listed as having the following sets of parents who don't seem to be mergeable:
William Welch and Anna Bliss AND
David Wlech and Ammitta Read (aka Amity)
William Welch's profile is unsourced, so that might be a confounding factor. John's FAG memorial lists no parents.