D7 Related Nodes within a Content Type Please forgive me if this is a total noob question, but here it is anyway.

I have a content type 'person'. One of the fields I want to add to the 'person' is a relatives field and I want it to either be an autocomplete or a drop down list. I'm pretty sure I can figure that part out. The question is, how can I populate the drop down list (or the autocomplete) with the names of all 'person' content that is already created?

Also, I am using the persons full name for my title field.

I'm also running drupal 7 and I've installed the CTools and Views modules.

EDIT:

After some more thought on this, what I'm really trying to do is have a field that links to a related content node. That way if a person is ever deleted they would also be removed from those who claim to be related to them.

Does drupal have a way to do this? I have so many ideas on how to use drupal, but most of them involve relating nodes to one another in a heirarchal format.
I would look at the references module, this will allow you to manually set relationships between your "people".