User blog comment:TheUnknown285/A very interesting image from the remake of Halo (yes, this is ME-related)/@comment-3546663-20120403005440/@comment-3228423-20120403013301

I think I could get the Chief's name, named after John from the bible, because there's a sh*tload of religious references from there.

As for Shepard's default names, John and Jane, I'm guessing those two are just named after the generic names that police officers give unknown males and females: John Doe and Jane Doe. That's just my theory. :P