a teaching/research 'fellow' [=a graduate student who gets money in exchange for teaching/research]
He attended the concert with a 'fellow' student. [=someone who is a student, as he is]
He has always tried to be of service to 'his fellow man'. [=to other people]
(..) with bloodmagic. And when Stannis paid for his crime, where were they? Already out looking for a leader with better prospects. And that wildling fellow with the beard-- Jon isn't Tormund. Jon isn't Davos, the Red Woman or Stannis for that matter. Jon is Jon. (..)2016 TvShow: Game of Thrones Title: The Door Season: 6 Episode 5
(..) - (footsteps) Ooh! Ooh, what's happened here, then? He brought you here, Ned Stark, 'cause you're the brightest fellow in the land. You should be king of us all and I should be your Hand. We men of the North are right good hands at keeping people lawful. (..)2016 TvShow: Game of Thrones Title: The Door Season: 6 Episode 5