I think there may be a glitch with names on the family tree. This is the tree in question:

This is complicated to explain, but I'll try to be as clear as possible:
As you can see, I have two sets of twins named Iris & Rose (one set in row one & one set in row two). This was unintentional ....
1) The first set of twins (first row of children) were originally called Scarlett & Tallulah, and the second set of twins (second row of children) were named Iris & Rose.
2) Then, I decided to change Iris (second row of children) to Scarlett after Scarlett in the first set of twins (so, basically naming her after her Aunt).
3) However, I then changed my mind & decided to go back to Iris. When I changed Iris' name back to Iris from Scarlett, the original Scarlett in the first set of twins also had her name changed to Iris.
I experimented a bit, and the same thing happened with the other half of the twins. Hence, two sets of twins called Rose & Iris. Now, whenever I change the names of the second Rose or Iris, the first Rose or Iris have their name changed to that too!
Hope you followed that! Any idea what's going on?