child relation in a "custom label"

Is it possible to put a “child relation” in a "custom label?  I was thinking something like this:

Yes. When you add the Child relationship. Tricky part is target the desired child if there are many.

Yes, there are many.  I see how that can be a problem  Was trying to get fancy.  Thanks Pat.

You could potentially set conditions to isolate it to 1 record.