I have a reoccurring couple

Heidi Ann Murdoch

I have put out a discussion to see if it is possible that a person in my family tree married his sisters daughter. I suppose it could happen but I am inclined to think it is an error. Do I just wait and hope for the best?

Áine Ní Donnghaile

If the people concerned are deceased, can you share the profile identifying code(s), so we can take a look at the people involved?
If anyone is still living, we can't help, because we won't be able to see their profiles, for privacy reasons.

The identifying code will be near the name, as I have highlighted in green on this example.