One of the things I learned back in EFM yr 1 was that in some (ancient) cultures the practice of giving captives new names was in order to demonstrate power and control over the captives.  E.g., Daniel, Hananiah, Mishael, and Azariah were assigned new names Belteshazzar, Shadrach, Meshach, and Abednigo when they were captured by Nebuchadezzar (Daniel 1:1-7).

I think of that every time John Sheppard names a Wraith: Steve, Bob, Michael.

And so I found it extra significant that Sheppard didn't assign a name to the Wraith in Common Ground, with whom he conspired, joked, and escaped -- and to whom Sheppard did not break his word.