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]
(..) They'd rather burn than fight for me, so be it. I leave their fate to you. You could execute them, that's the safest course. Or you could see if this Tormund fellow is more willing to compromise than Mance ever was. I assume the brothers of the Night's Watch would rather see the wildlings dead. (..)2015 TvShow: Game of Thrones Title: High Sparrow Season: 5 Episode 3