[Prime8]

I'm a newb, so feel free to ignore me but I think as you add data this will get more and more complex. My guess is a reference to the parent in the child's data set would make this easier.

edit: something like this:

1,0,Adam,0
2,1,Cane,1
3,1,Able,1
4,0,Bob,0
5,0,John,0
6,1,Dave,5
7,1,Jill,2

edit2: I misread what you meant. You already have a reference to the parent. I thought you were saying you had an field for whether the entry was a child or not.