Find a precise children with is parent

Hi everybody,
I’m working on a project using photon unity network and i know and object and I want to access to a precise children of it, but i can’t do it with the name because many objects has the same name because each players has a copy of it, i don’t know if i’m understable :confused:
So my hierachy look like this:

parent (Clone):

child A
child B
child C

parent (Clone):

child A
child B
child C

parent (Clone):

child A
child B
child C

So knowing which on parent i want the children i would like to get the child C
So i hope to be understood.
Thanks you

Short and easy:

int childIndex = 0;
transform.GetChild(childIndex);

Example here