That doesn't work in FTM 2011. You can't delete a nonexistent person; she doesn't have a name. I tried naming her "deleted spouse," detached the deleted spouse, then deleted the person named "deleted spouse." The original husband still shows a second marriage to an unknown spouse with no name. There are no children, no marriage date, no notes of any kind to indicate the spouse exists, so I can't delete those. I have 48,000 names in my family tree, and many, many unknown spouses that I can't eliminate even though they never existed. Help!