For our third, my husband and I made our own lists with about ten names on it. We got to take turns crossing out names on the others list until we were left with two. then we waited until our sin was born to decide which suited him. We chose Cian (keeyan) Rayne. Good luck!
I had to ask my fiancé about the names he liked...I even suggested names I didn't like...I eventually ran across a name that we both love! We had the same exact reaction when we heard it so we immediately stopped looking. :)
Ask him what names he likes, or to help you think of names. Are you wanting traditional, common, or uncommon names?