One person with Marker in Two Cemeteries

The title pretty much says it all. I took a photo of a grave marker in the Seattle area and found a memorial for what I presumed was her husband. After a quick look around, I found this same person (I think) in another cemetery over in Spokane. I haven't done anything yet and won't unless I'm very sure this is the same person.

But hypothetically, how are these situations resolved?