I've sorted it out, based on who added the profiles / managers. There was a bad merge of two John Murphys.
I've curated the parents and the next generation and put Curator's Notes in and let the managers know what I did and why.
There was also a Dec 29, 2010 automated merge and there were two bad merges subsequent that were done manually. I'm not sure if the Dec 29, 2010 merge precipitated the problem, but I always view this as suspicious when I see it in Revisions.
Thank you, Hatte Blejer. Figuring out bad merges is not a strength of mine at all, so I appreciate you fixing this longstanding issue.