Windows Phone 8 - Finding Text Messages?

How I have my phone set up:
Phone is Nokia Lumia 520 - ATT

I have 2 groups of contacts, which are 'family' and 'common contacts'. I pull all contacts from outlook online and facebook, in addition to the phone itself. So family and common contacts do not have all my contacts listed in them, because there are quite a few.

These contact 'boxes' tell me who has texted me in the past, by saying 'New Message', etc. Also, my lock screen tells me if I have missed texts, calls, etc.

Pic of Contacts box:

Pic of lock screen

I have more than 7 messages listed on the lock screen that I cannot find the source to. They aren't in my family or common contacts or it would display 'new message' in the green box, so they must be from someone else in my address book. Also, whenever someone who is not a family or common contact messages me, I get the message, but no notification except on the lock screen (which says how many new messages I have, but not who from).